Please review our hiker info page to familiarize yourself with hiker safety rules and our hike ratings so that you can select hikes that meet your level of fitness. Unless specified otherwise in the activity descriptions below, hikes have a 15 person limit, and they begin in the ABDNHA parking lot.

4WD Tour: Canyon Sin Nombre-Diablo Dropoff-Fish Creek (MEMBERS PRIORITY) – FULL (waitlist)

Leader: Jim Torian, ABDNHA Volunteer
TOUR IS FULL - PLEASE CALL ABDNHA at 760-767-3098 to get on waitlist.
Level 4 Required – 4WD High Clearance**

We'll meet at 9:00 am at the south entrance to Canyon Sin Nombre, off the S2, 34 miles south of SR78 (Scissors Crossing), about 0.6 miles south of Sweeney Pass. We'll brief and air down before starting our journey within ABDSP. We'll travel 13 miles on Canyon Sin Nombre to Vallecito Creek Road, then to Arroyo Seco del Diablo, reaching the Diablo drop-off, which has both easy and challenging descents. From there, we’ll head north to Split Mountain Road, where our trip ends. Expect rocky roads, washboard, soft sand, and mild challenges. Lunch is BYO, and a stop will be made. Check the weather and dress accordingly. Bring water and a full tank of gas. GMRS channel 15 is optional. 4WD is required; no AWD. This is a members-priority trip. Visit the Nature Center or call to reserve: 760-767-3098.

** Level 4: 4WD High Clearance REQUIRED due to deep sand, large rocks, steep sections, large obstacles, or rough conditions

Webinar: Geology of San Diego County’s Peninsular Ranges – POSTPONED

Zoom
Virtual Event

This presentation is postponed to a later date.  The new date will be posted here as soon as possible

Speaker: Geologist Don Barrie
Please join Mesa College geology professor and ABDNHA board member, Don Barrie, for his repeat lecture on San Diego County’s Peninsular Ranges, with emphasis on the Laguna Mountains west of Borrego Springs. Don’s lecture will focus on how plate tectonic processes have created the complex collage of igneous and metamorphic rocks exposed both regionally, throughout southeastern California, and locally, in the Lagunas. GP $12, M $10, V $8 (per connection).

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