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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260104T090000
DTEND;TZID=America/Los_Angeles:20260104T120000
DTSTAMP:20260422T040255
CREATED:20251224T223837Z
LAST-MODIFIED:20251227T175234Z
UID:10000888-1767517200-1767528000@abdnha.org
SUMMARY:Beginning Birding: Borrego Springs Resort (Easy) - FULL (waitlist)
DESCRIPTION:Leaders: Tom Keffer and Lee Christie\, ABDNHA Volunteers \nIf you can’t tell a sparrow from a flycatcher from a wren\, this trip is for you! Instead of racking up species\, we will slow down and take more time with each individual bird\, learning how to identify them. We will be carrying a scope\, so you’ll get a good look at what distinguishes a bird. 1.5 miles\, no elevation gain\, easy trail. Meet in the ABDNHA parking lot by 8:50 am.  Bring snacks\, binoculars\, and water. Call 760-767-3098 to reserve. Limit: 10.
URL:https://abdnha.org/activity/beginning-birding-borrego-springs-resort-easy-full-waitlist/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260106T080000
DTEND;TZID=America/Los_Angeles:20260106T150000
DTSTAMP:20260422T040255
CREATED:20260102T225611Z
LAST-MODIFIED:20260102T230710Z
UID:10000911-1767686400-1767711600@abdnha.org
SUMMARY:Hike: "Rockhouse hike" REPLACED BY RATTLESNAKE CANYON (STRENUOUS) DUE TO FLOODING - FULL (waitlist)
DESCRIPTION:Leaders: Carmelita Logerwell and Terri Straub \nHIKE IS FULL – PLEASE CALL ABDNHA at 760-767-3098 to get on waitlist. \nHike 8 miles\, 1375’ gain. Walk up a beautiful canyon to where it ends at an interesting 25 foot dry waterfall. Have fun figuring out the best way up the canyon\, as it is quite wide\, and there are many different routes you could take\, and many rocks to step up and around. But none of them are too difficult. No dirt driving\, park right off the road. Max 15 people. Meet at ABDNHA by 7:50. Bring lunch\, snacks\, and water. Call 760-767-3098 to reserve.
URL:https://abdnha.org/activity/hike-rockhouse-hike-replaced-by-rattlesnake-canyon-strenuous-due-to-flooding-full-waitlist-copy/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260106T090000
DTEND;TZID=America/Los_Angeles:20260106T120000
DTSTAMP:20260422T040255
CREATED:20251206T220715Z
LAST-MODIFIED:20251206T220715Z
UID:10000782-1767690000-1767700800@abdnha.org
SUMMARY:Nature Journaling (Easy)
DESCRIPTION:Leaders: Pat Matthews and Selden McKee\, ABDNHA Volunteers \nThis activity repeats on the first Tuesdays of the month to explore nature journaling in the ABDNHA garden and in the field until noon.  No experience necessary — just a curiosity about the natural world. Participants will need a small\, unlined journal\, a pencil\, an eraser\, a micron pen\, colored pencils or a compact watercolor set\, and a chair. We will be outdoors\, so a sun hat\, water\, and a snack are recommended. Meet in the parking lot of ABDNHA. No charge; call the Nature Center to reserve.
URL:https://abdnha.org/activity/nature-journaling-easy/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Journaling
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260107T190000
DTEND;TZID=America/Los_Angeles:20260107T200000
DTSTAMP:20260422T040255
CREATED:20260105T192250Z
LAST-MODIFIED:20260105T192250Z
UID:10000916-1767812400-1767816000@abdnha.org
SUMMARY:Lecture: Life in the Borderlands - the History of Crossing the California-Mexico Border
DESCRIPTION:Desert Lecture Series \nSpeaker: Immigration Historian Deborah Kang\, Ph.D. \nIn the early 1900s\, people freely crossed back and forth between California and Mexico because federal immigration laws were not strongly enforced\, and the two sides were often regarded as parts of the same community.  World War I and the Mexican Revolution led to this change\, as strict regulations were imposed amid growing concerns about foreign enemies and immigrants. Residents in the borderlands strongly objected because they relied upon easy crossings for their society\, family ties\, and economy.  Their objections led to enforcement being relaxed once again.  Our speaker tonight\, Deborah Kang\, is an immigration historian who will explain the evolution of laws and practices along the California-Mexico border\, from around 1900 to the present day.  Join us for this lecture at the Borrego Springs Performing Arts Center. The program is free for ABDNHA members\, and $10 at the door for the general public. Seating is first-come\, first-served.
URL:https://abdnha.org/activity/lecture-life-in-the-borderlands-the-history-of-crossing-the-california-mexico-border-2/
LOCATION:Borrego Springs Performing Arts Center\, 590 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2026/01/260107_Borderlands.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260108T080000
DTEND;TZID=America/Los_Angeles:20260108T140000
DTSTAMP:20260422T040255
CREATED:20260106T225448Z
LAST-MODIFIED:20260106T225448Z
UID:10000925-1767859200-1767880800@abdnha.org
SUMMARY:Birding Walk: Dos Palmas Reserve (Easy)
DESCRIPTION:Leaders: Tom Keffer and Lee Christie\, ABDNHA Volunteers \nDos Palmas is a delightful desert oasis on the northeast side of the Salton Sea. First\, we’ll visit a cathedral-like grove of desert palm trees. Then\, a one-mile walk with beautiful desert views leads us to a series of ponds surrounded by lots of vegetation\, which attract a variety of birds. We’ll look for Ring-necked Duck\, Bufflehead\, Ruddy Duck\, Sora\, Kingfisher\, and others. Maybe we’ll get lucky and see a Prairie Falcon. Total distance\, five miles\, flat. The travel time is 1.5 hours each way. Meet at ABDNHA by 7:50 am. Bring lunch/snacks\, binoculars\, and water. Call 760-767-3098 to reserve. Limit: 10.
URL:https://abdnha.org/activity/birding-walk-dos-palmas-reserve-easy/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260109T100000
DTEND;TZID=America/Los_Angeles:20260109T120000
DTSTAMP:20260422T040255
CREATED:20251006T211319Z
LAST-MODIFIED:20251130T080102Z
UID:10000701-1767952800-1767960000@abdnha.org
SUMMARY:ABDNHA Friendly Friday Bike Ride
DESCRIPTION:Leader: Paul Petersen\, ABDNHA Volunteer. \nRelaxed social ride of 20-30 miles\, mostly flat\, at a 10-12 mph pace. Routes vary weekly\, and fun rides to highlight the roads less traveled. Return times vary depending on the chosen route. FREE\, every Friday. No registration required. Meet in the parking lot opposite the County Public Library.
URL:https://abdnha.org/activity/abdnha-friendly-friday-bike-ride/2026-01-09/
LOCATION:CA
CATEGORIES:Biking
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260109T183000
DTEND;TZID=America/Los_Angeles:20260109T193000
DTSTAMP:20260422T040255
CREATED:20260106T002752Z
LAST-MODIFIED:20260106T002752Z
UID:10000920-1767983400-1767987000@abdnha.org
SUMMARY:Lecture: The Story of the Salton Sea - FULL
DESCRIPTION:THIS PROGRAM IS FULL. \nSpeaker: Dave Blanchet\, (ret.) Hydrologist \nFirst there was the geology\, and then came the flood.  The Salton Sea is located along the San Andreas Fault\, and it is geology that repeatedly created and drained a vast natural lake over millions of years\, called Lake Cahuilla\, in what is now the Imperial Valley. Starting in the 20th century\, agriculture began to flourish in California’s Imperial Valley\, and diversion canals were dug to divert water from the Colorado River into the dry desert.  But the wild nature of the Colorado River soon took the upper hand. Events went horribly awry as record-breaking floodwaters destroyed the manmade dams and canals\, and the full flow of the Colorado River flowed unabated into the Salton Trough for two years. Only through immense effort was the flooding finally stopped\, and the Colorado River returned to its course\, flowing into the Sea of Cortez.  Tonight’s speaker\, Dave Blanchet\, is a retired hydrologist from Anchorage\, Alaska\, and a lifetime member of ABDNHA.  General Public: $12\, Members: $10\, Volunteers: $8. Please register at www.abdnha.org or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/lecture-the-story-of-the-salton-sea-full/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260110T080000
DTEND;TZID=America/Los_Angeles:20260110T150000
DTSTAMP:20260422T040255
CREATED:20251224T230318Z
LAST-MODIFIED:20251224T230318Z
UID:10000890-1768032000-1768057200@abdnha.org
SUMMARY:Hike: Hornblende Canyon (Moderate) - FULL (waitlist)
DESCRIPTION:Leader: Rachel Rench\, ABDNHA Volunteer \nMeet at the ABDNHA parking lot at 8:00 am to carpool to a parking area South of Blair Valley. Parking is limited there\, so we need to take as few cars as possible. The hike up Hornblende Canyon is fairly flat in the beginning\, but you’ll need to be able to navigate a few small dry waterfalls until we reach a 40-foot-high dry waterfall and our turnaround point. We’ll eat lunch here and then return the way we came. This hike will be limited to 15 people. Call the Nature Center to reserve.
URL:https://abdnha.org/activity/hike-hornblende-canyon-moderate-full-waitlist/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260110T083000
DTEND;TZID=America/Los_Angeles:20260110T120000
DTSTAMP:20260422T040255
CREATED:20251224T231438Z
LAST-MODIFIED:20251224T231438Z
UID:10000891-1768033800-1768046400@abdnha.org
SUMMARY:Hike: West Truckhaven Wash (Moderate) - FULL (waitlist)
DESCRIPTION:Leader: Kathy Bussey\, ABDNHA Volunteer \nA mile east of Arroyo Salado\, on the North side of S22\, lie the unique Truckhaven Rocks\, a Swiss cheese sandstone formation. This 2.3-mile round-trip hike skirts the West side of the Rocks. We will walk up a sandy wash that eventually narrows between weathered sandstone walls. The hike is easy. However\, there is one three-foot dry waterfall that we need to climb up. Meet at ABDNHA and be willing to carpool. 2WD OK. Bring water\, snacks\, a hat\, and sturdy boots. Call 760-767-3098 to reserve. Limit: 18.
URL:https://abdnha.org/activity/hike-west-truckhaven-wash-moderate-full-waitlist/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260110T153000
DTEND;TZID=America/Los_Angeles:20260110T163000
DTSTAMP:20260422T040255
CREATED:20251206T220713Z
LAST-MODIFIED:20251215T173000Z
UID:10000836-1768059000-1768062600@abdnha.org
SUMMARY:Astronomy Lecture: Fossils of the Solar System
DESCRIPTION:Speaker: Dr. Neil Farber \nJust as fossils on Earth are remnants of past life forms\, there are astronomical fossils in space dating back to the early days of the Solar System\, which may provide insights into how the Solar System and life itself originated. NASA is conducting a multitude of missions to study asteroids\, aiming to enhance our understanding of the Solar System and explore ways to mitigate the threats posed by potential collisions with Earth. General Public: $12\, Members: $10\, Volunteers: $8. You can register online at www.abdnhaorg or at the Nature Center\, 760-767-3098. Held in the ABDNHA Library.
URL:https://abdnha.org/activity/astronomy-lecture-fossils-of-the-solar-system/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2025/12/260110-fossilsofsolarsystem.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260111T080000
DTEND;TZID=America/Los_Angeles:20260111T120000
DTSTAMP:20260422T040255
CREATED:20251206T220713Z
LAST-MODIFIED:20251206T220713Z
UID:10000835-1768118400-1768132800@abdnha.org
SUMMARY:Hike: Sentenac Mountain Loop (Strenuous)
DESCRIPTION:Leader: Tom Keffer\, ABDNHA Volunteer \nWe start with a pleasant hike up well-shaded Plum Canyon\, but then after a mile\, we’ll head off-trail up a rough canyon\, heading for the summit of Sentenac Mountain. The views on top are sweeping. The descent rejoins the Plum Canyon trail about a half mile from the parking area. Three miles round-trip\, 800’ vertical. Steep with an occasional cholla. Sandy 1.5-mile access road\, suitable for most 2WD. Meet at ABDNHA by 7:50 am. Wear sturdy boots (no tennies!) and long pants. Bring lunch/snacks\, water. Call 760-767-3098 to reserve. Limit: 10.
URL:https://abdnha.org/activity/hike-sentenac-mountain-loop-strenuous/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260111T130000
DTEND;TZID=America/Los_Angeles:20260111T133000
DTSTAMP:20260422T040255
CREATED:20251206T220713Z
LAST-MODIFIED:20251206T220713Z
UID:10000815-1768136400-1768138200@abdnha.org
SUMMARY:Short Walk in ABDNHA's Desert Garden
DESCRIPTION:Leader: Amateur Botanist Kathy Bussey \nJoin Kathy Bussey for a short stroll around ABDNHA’s desert garden\, a peaceful and beautiful spot filled with desert plants from throughout the southwest deserts\, trees\, cacti\, shrubs\, and annual flowers\, featuring many colorful signs and artwork. The garden begins to bloom in mid-February. Bird activity\, artwork\, and information panels lend additional color. The garden surface is flat\, making it very easy to walk on. Meet in the ABDNHA Parking lot. Call or drop by the Nature Center to register. Also presented on Jan. 25.
URL:https://abdnha.org/activity/short-walk-in-abdnhas-desert-garden-5/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260112T080000
DTEND;TZID=America/Los_Angeles:20260112T120000
DTSTAMP:20260422T040255
CREATED:20251224T231735Z
LAST-MODIFIED:20260112T190351Z
UID:10000892-1768204800-1768219200@abdnha.org
SUMMARY:Hike: Truckhaven Rocks to Coachwhip (Moderate to Fairly Strenuous) - FULL (waitlist)
DESCRIPTION:Leader: Bruce Kelley\, ABDNHA Volunteer \nHIKE IS FULL – PLEASE CALL ABDNHA at 760-767-3098 to get on waitlist. \nThis walk will explore ancient rocks that were split from the Santa Rosa Mountains and uplifted due to tectonic action\, located just northwest of S22\, near the Salton Sea. This is a moderate three-mile hike mostly in Truckhaven Wash\, circling behind the main rocks visible from the highway. We will leave that wash and cross a ridge to emerge in Coachwhip Canyon. The last part up and the first part down the ridge are steep. Bring water\, hat\, sunscreen\, hiking shoes and you may want a stick (I’ll have several extras). Bring your AWD or 4WD vehicle if possible. We are going to do a shuttle hike. Meet in the parking lot of ABDNHA by 7:50 am. \n 
URL:https://abdnha.org/activity/hike-truckhaven-rocks-to-coachwhip-moderate-to-fairly-strenuous-full-waitlist/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260113T093000
DTEND;TZID=America/Los_Angeles:20260113T120000
DTSTAMP:20260422T040255
CREATED:20260103T000750Z
LAST-MODIFIED:20260103T000750Z
UID:10000912-1768296600-1768305600@abdnha.org
SUMMARY:Plant Amble (Easy) - FULL (waitlist)
DESCRIPTION:Leader: Pam Blake\, ABDNHA Volunteer \nThis is a variation on Pam’s ambles\, focused on plants. We will take a leisurely stroll through the desert\, discussing various plant adaptations that enable them to thrive in this challenging environment. Meet at the ABDNHA parking lot at 9:30 am and return by noon after a relatively short and easy walk. Call the Nature Center to reserve. Activity repeats 2nd Tuesday of the month.
URL:https://abdnha.org/activity/plant-amble-easy-full-waitlist/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260114
DTEND;VALUE=DATE:20260115
DTSTAMP:20260422T040255
CREATED:20251003T175722Z
LAST-MODIFIED:20251006T205409Z
UID:10000909-1768348800-1768435199@abdnha.org
SUMMARY:Borrego Rock & Gem Club (BRAG) Field Trip
DESCRIPTION:Like rocks? Join BRAG and meet other rockhounds! \nThe BRAG club field trip is every 2nd Wed\, meeting in the ABDNHA parking lot. \nNote: Field trips may start at 8:00 am or 9:00 am\, depending on the destination. We usually try to get back to Borrego around 3:00 pm.
URL:https://abdnha.org/activity/borrego-rock-gem-club-brag-field-trip/2026-01-14/
LOCATION:CA
CATEGORIES:Club,Field Trip
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260114T090000
DTEND;TZID=America/Los_Angeles:20260114T160000
DTSTAMP:20260422T040255
CREATED:20251226T191845Z
LAST-MODIFIED:20251226T192008Z
UID:10000893-1768381200-1768406400@abdnha.org
SUMMARY:4WD Tour: Dave McCain Spring (Members Priority) - FULL (waitlist)
DESCRIPTION:Leader: Dave Walters\, ABDNHA Volunteer   \nLevel 4 Short Wheel Base Vehicle only** \nWe meet at the ABDNHA parking lot at 9:00 am\, then caravan to the trailhead at Fish Creek. We will drive 18 miles through deep sand in the canyon to reach our destination\, where we will have lunch and explore. We will return by the same route to the paved road. Bring food and water. Wear weather-appropriate clothes\, a hat\, and a chair. We will be using two-way GRMS radios on channel 15. No charge. This is a members priority trip. Stop by or call the Nature Center to reserve\, 760-767-3098. \n**Level 4 4WD REQUIRED due to deep sand\, large rocks\, steep sections\, large obstacles\, or rough conditions
URL:https://abdnha.org/activity/4wd-tour-dave-mccain-spring-members-priority-full-waitlist/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:4WD
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260115T080000
DTEND;TZID=America/Los_Angeles:20260115T120000
DTSTAMP:20260422T040255
CREATED:20260108T005708Z
LAST-MODIFIED:20260108T005708Z
UID:10000929-1768464000-1768478400@abdnha.org
SUMMARY:Birding Walk  Salton Sea Unit 1  Vendal Rd. (Easy)
DESCRIPTION:Trip Leaders: Tom Keffer and Lee Christie \nToday we head to one of the best birding locations in our region: Unit 1 of the Sonny Bono Salton Sea National Wildlife Refuge. Expect Shovelers\, Teals\, Stilts\, Avocet\, Godwit\, Dowitchers\, thousands of Snow Geese and more. Easy walk of 2 miles RT\, no elevation\, good  tread. Travel time 1 hour each way.  Meet at ABDNHA by 7:50 a.m. Bring lunch/snacks\, binoculars\, water. Call 760-767-3098 to reserve. Limit: 10
URL:https://abdnha.org/activity/birding-walk-salton-sea-unit-1-vendal-rd-easy/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Birding,Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260116T100000
DTEND;TZID=America/Los_Angeles:20260116T120000
DTSTAMP:20260422T040255
CREATED:20251006T211319Z
LAST-MODIFIED:20251130T080102Z
UID:10000702-1768557600-1768564800@abdnha.org
SUMMARY:ABDNHA Friendly Friday Bike Ride
DESCRIPTION:Leader: Paul Petersen\, ABDNHA Volunteer. \nRelaxed social ride of 20-30 miles\, mostly flat\, at a 10-12 mph pace. Routes vary weekly\, and fun rides to highlight the roads less traveled. Return times vary depending on the chosen route. FREE\, every Friday. No registration required. Meet in the parking lot opposite the County Public Library.
URL:https://abdnha.org/activity/abdnha-friendly-friday-bike-ride/2026-01-16/
LOCATION:CA
CATEGORIES:Biking
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260116T183000
DTEND;TZID=America/Los_Angeles:20260116T193000
DTSTAMP:20260422T040255
CREATED:20260108T212316Z
LAST-MODIFIED:20260108T212316Z
UID:10000930-1768588200-1768591800@abdnha.org
SUMMARY:Lecture: Leeches\, Land Mines\, and Lizards; The Nature of Researching Nature in Cambodia
DESCRIPTION:Speaker: Lee Grismer\, Ph.D.\, Herpetologist \nJoin world-class herpetologist Lee Grismer as he takes us along on his most recent exploration to find new reptiles and amphibians in Cambodia’s jungles. It became a scientific journey of discovery that placed him right in the middle of an unexpected war between Thailand and Cambodia. As always\, the photography will be award-winning\, as will the stories that go with it. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. You can register online or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/lecture-leeches-land-mines-and-lizards-the-nature-of-researching-nature-in-cambodia-3/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2026/01/lizards.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260117T100000
DTEND;TZID=America/Los_Angeles:20260117T113000
DTSTAMP:20260422T040255
CREATED:20251206T215745Z
LAST-MODIFIED:20251206T215745Z
UID:10000829-1768644000-1768649400@abdnha.org
SUMMARY:Borrego Walkabout (Easy)
DESCRIPTION:Leaders: Selden McKee and Mike McElhatton \nGet a little exercise\, take some photos\, learn the history\, and hear the stories behind the buildings and places in this tiny desert town we all love so much – Borrego Springs. We will start at ABDNHA and cover approximately 1.5 miles\, all of which is flat. Wear comfortable walking shoes. No charge\, but pre-registration is required at ABDNHA’s Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/borrego-walkabout-easy/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260117T183000
DTEND;TZID=America/Los_Angeles:20260117T193000
DTSTAMP:20260422T040255
CREATED:20251206T215745Z
LAST-MODIFIED:20260118T022932Z
UID:10000828-1768674600-1768678200@abdnha.org
SUMMARY:Lecture: Where it All Began\, El Presidio of San Diego
DESCRIPTION:Speaker: Author and Historian Richard Carrico \nJoin Richard Carrico as he explores Alta California’s first Spanish settlement at Presidio Hill in San Diego. Founded in 1769\, the ruins of the mission and fort are now beneath the landscaped hills in Presidio Park. Carrico’s newly released book tells the stories of those who lived at the presidio\, including the Kumeyaay people. One highlighted story is of Sinusin\, a Kumeyaay woman who married a Spanish soldier and raised her family at the presidio. Carrico’s extensive research draws from Spanish archives\, Kumeyaay oral traditions\, and nearly a decade of archaeological work at the site. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. Register online or at the Nature Center\, 760-767-3098. \n  \n  \n\n  Get Tickets
URL:https://abdnha.org/activity/lecture-where-it-all-began-el-presidio-of-san-diego/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260118T080000
DTEND;TZID=America/Los_Angeles:20260118T140000
DTSTAMP:20260422T040255
CREATED:20260117T213346Z
LAST-MODIFIED:20260117T213346Z
UID:10000934-1768723200-1768744800@abdnha.org
SUMMARY:Hike: Mountain Palm Springs (Moderate)
DESCRIPTION:Leaders: Tom Keffer and Lee Christie\, ABDNHA Volunteers \nWe will visit not one\, not two\, not three\, but five different palm groves\, some of them with up to a hundred trees! 4.5-mile round-trip\, 550’ vertical\, mostly soft sand\, but there are some moderate sections with a bit of bouldering. Be prepared to pay a $10 parking fee. Travel time is 1 1⁄4 hours each way. Meet at ABDNHA by 7:50 am. Bring lunch/snacks\, water. Call 760-767-3098 to reserve. Limit: 10.
URL:https://abdnha.org/activity/hike-mountain-palm-springs-moderate/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260119T075000
DTEND;TZID=America/Los_Angeles:20260119T130000
DTSTAMP:20260422T040255
CREATED:20251206T215744Z
LAST-MODIFIED:20260112T003504Z
UID:10000826-1768809000-1768827600@abdnha.org
SUMMARY:Hike: California Riding and Hiking Trail Part 2 (Strenuous)
DESCRIPTION:Leader: Rachel Rench\, ABDNHA Volunteer \nMeet at the ABDNHA parking lot at 8:00 am to arrange our car shuttle. We’ll drive up to mile 11.2 on Hwy. S22 and leave a set of cars at the Big Spring parking area. We’ll take the rest of the cars down to Hellhole Canyon and start our hike up to Culp Valley Camp. There will be a $10 parking fee for any vehicle parked at Hellhole Canyon if participants don’t have a State Park pass. From here\, we hike up the California Riding and Hiking Trail to the Culp Valley Campground Trail\, over a small pass\, and descend into Dry Canyon\, where we’ll pick up a faint social trail. The group will follow Rachel up a hill out of Dry Canyon and eventually pick up a trail that will take us back to the parking area on S22. This hike is approximately six miles with 2500′ of elevation gain\, and some steep sections to navigate. Long pants\, long sleeves\, and hiking poles are strongly recommended. Max. 12 people. Call the Nature Center to reserve.
URL:https://abdnha.org/activity/hike-california-riding-and-hiking-trail-part-2-strenuous/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260120T080000
DTEND;TZID=America/Los_Angeles:20260120T160000
DTSTAMP:20260422T040255
CREATED:20251209T163218Z
LAST-MODIFIED:20251209T163844Z
UID:10000871-1768896000-1768924800@abdnha.org
SUMMARY:Hike: Crazycline Canyon Loop (Strenuous)
DESCRIPTION:Leaders: Carmelita Logerwell and Terri Straub\nHike: 5.0 miles\, 1000′ gain. A very rocky and interesting canyon. Plenty of rocks and dry waterfalls to go up\, over\, and around. Many synclines and anticlines\, hence the canyon’s name. High clearance vehicles recommended. Meet at ABDNHA by 7:50 a.m. Bring snacks/lunch\, water\, good hiking shoes\, and a good attitude. (Hike statistics subject to change based on group\, weather\, or other factors.)
URL:https://abdnha.org/activity/hike-crazycline-canyon-loop-strenuous/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260120T090000
DTEND;TZID=America/Los_Angeles:20260120T120000
DTSTAMP:20260422T040255
CREATED:20251206T215744Z
LAST-MODIFIED:20251206T215744Z
UID:10000825-1768899600-1768910400@abdnha.org
SUMMARY:Nature Journaling in the Field (Easy)
DESCRIPTION:Leader: Pam Blake\, ABDNHA Volunteer \nCome practice nature journaling in the field with Pam Blake. Meet in the ABDNHA parking lot at 9:00 am and set out from there. You’ll need your own supplies and some familiarity with this practice\, as this session offers a chance for further nature journaling with a group but without instruction. No charge; call the Nature Center to reserve. This activity is repeated on the third Tuesday of each month.
URL:https://abdnha.org/activity/nature-journaling-in-the-field-easy/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Journaling
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260120T180000
DTEND;TZID=America/Los_Angeles:20260120T193000
DTSTAMP:20260422T040255
CREATED:20260106T001937Z
LAST-MODIFIED:20260106T001937Z
UID:10000919-1768932000-1768937400@abdnha.org
SUMMARY:Lecture and Stargazing: Winter Star Clusters
DESCRIPTION:Speaker: Randolph Baron \nIn the winter our night sky is graced by the winter Milky Way and the sky is packed with beautiful star clusters. We will first talk about how these star clusters form and evolve and then head on out to look at some splendid examples. 30-minute lecture followed by stargazing in the ABDNHA garden. In the ABDNHA Library and ABDNHA garden. Registration required. General Public: $12\, Members: $10\, Volunteers: $8. Register online at abdnha.org or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/lecture-and-stargazing-winter-star-clusters/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture,Stargazing
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260122T080000
DTEND;TZID=America/Los_Angeles:20260122T140000
DTSTAMP:20260422T040255
CREATED:20251206T215744Z
LAST-MODIFIED:20251206T215744Z
UID:10000824-1769068800-1769090400@abdnha.org
SUMMARY:Birding Walk: Sonny Bono Refuge Visitor Center (Easy)
DESCRIPTION:Leaders: Tom Keffer and Lee Christie\, ABDNHA Volunteers \nSome of the best birding in our area. We will walk out to Rock Hill\, two miles round-trip\, with no elevation gain. We are likely to see Snow Goose (sometimes in the thousands)\, Shoveler\, Pintail\, Teal\, Dowitcher\, and Burrowing Owl. Travel time is 1 ¼ hours each way. Meet at ABDNHA by 7:50 a.m. Bring lunch/snacks\, binoculars\, and water. Call 760-767-3098 to reserve. Limit: 10.
URL:https://abdnha.org/activity/birding-walk-sonny-bono-refuge-visitor-center-easy/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Hike
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260123T100000
DTEND;TZID=America/Los_Angeles:20260123T120000
DTSTAMP:20260422T040255
CREATED:20251006T211319Z
LAST-MODIFIED:20251130T080102Z
UID:10000703-1769162400-1769169600@abdnha.org
SUMMARY:ABDNHA Friendly Friday Bike Ride
DESCRIPTION:Leader: Paul Petersen\, ABDNHA Volunteer. \nRelaxed social ride of 20-30 miles\, mostly flat\, at a 10-12 mph pace. Routes vary weekly\, and fun rides to highlight the roads less traveled. Return times vary depending on the chosen route. FREE\, every Friday. No registration required. Meet in the parking lot opposite the County Public Library.
URL:https://abdnha.org/activity/abdnha-friendly-friday-bike-ride/2026-01-23/
LOCATION:CA
CATEGORIES:Biking
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260123T183000
DTEND;TZID=America/Los_Angeles:20260123T193000
DTSTAMP:20260422T040255
CREATED:20260113T000525Z
LAST-MODIFIED:20260119T014131Z
UID:10000933-1769193000-1769196600@abdnha.org
SUMMARY:Lecture: Flash Floods in Semi-Arid Landscapes - FULL (waitlist)
DESCRIPTION:Special Earth Sciences Weekend! \nSpeaker: Suzanne Walther\, Ph.D.\, University of San Diego \nPROGRAM IS FULL – PLEASE CALL ABDNHA at 760-767-3098 to get on waitlist. \nIt has been said that the two most common ways to die in the desert are from thirst and from drowning. Flash floods are the leading weather-related cause of death in the U.S. and many parts of the world\, and cause billions of dollars in damage. Dr. Suzanne Walther is a fluvial geomorphologist. She studies rivers\, streams\, floods\, sediment movement\, and how the natural flow of water shapes the landscape\, interacts with ecosystems\, and significantly impacts human development. The focus tonight is on flash floods in semi-arid areas\, such as Borrego Springs\, where they can occur\, the conditions that lead to their formation\, the powerful forces they unleash\, their effects on water supply and drought\, and what can be done to mitigate their destructive impact on human development. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. You can register online at abdnha.org or at the Nature Center\, 760-767-3098. \n\n\n  Get Tickets
URL:https://abdnha.org/activity/lecture-flash-floods-in-semi-arid-landscapes-full-waitlist/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2025/12/260123_Flash-Floods.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260124T084500
DTEND;TZID=America/Los_Angeles:20260124T123000
DTSTAMP:20260422T040255
CREATED:20251206T215505Z
LAST-MODIFIED:20251226T232137Z
UID:10000822-1769244300-1769257800@abdnha.org
SUMMARY:Field Trip: Ancient Lake Cahuilla - FULL (waitlist)
DESCRIPTION:Special Earth Science Series! \nFIELD TRIP IS FULL – PLEASE CALL ABDNHA at 760-767-3098 to get on waitlist \nLeader: John Peterson\, Hydrologist and Geologist \nApproximately 12\,000 years ago\, the Colorado River altered its course\, forming a massive prehistoric lake known as Lake Cahuilla\, which is now the Salton Sea.   The lake served as a vital resource for the Cahuilla\, Kumeyaay\, and Cocopah peoples. Over the centuries\, the lake filled and dried up many times. It last filled between 1731 and 1733. Hydrologist John Peterson will lead a half-day field trip to the Salton Sea\, where participants can explore the ancient lake’s remnants\, including visible “bathtub rings” and fishing traps. Meet at ABDNHA. General Public: $18\, Members: $12\, Volunteers: $10. Register online or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/field-trip-ancient-lake-cahuilla/
LOCATION:ABDNHA Parking Lot\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:Field Trip
END:VEVENT
END:VCALENDAR