Discover the wonders of Earth’s past on a scenic 4WD tour through Fish Creek & Split Mountain Gorge
Embark on a 4WD journey through the stunning Fish Creek and Split Mountain Gorge, a region rich with dramatic geological formations and fascinating fossil records. Experience firsthand the remnants of ancient seas, tectonic shifts, and prehistoric life as you explore a landscape shaped by millions of years of Earth’s history.
What to Expect:
A fascinating 4WD trip through scenic terrain
In-depth exploration of geological features like sturzstrom, faulting, and folding
Learn about the ancient Sea of Cortez, Colorado River Delta, and fossilized marine and land animals
Experienced guides sharing insights into the region's rich geological and paleontological history
Who Should Attend:
Geology enthusiasts and nature lovers eager to learn about Earth’s history
Outdoor adventurers with 4WD vehicles and high clearance
Anyone curious about fossils, tectonics, and the evolution of the desert landscape
Registration:
https://host.nxt.blackbaud.com/registration-form/?formId=8cef54d1-6cf6-4b92-8432-9c9a6bc0293a&envId=p-Of6JnJ-NDU-Ys4lsF7CG9w&zone=usa
Date: Sunday, February 7, 2026
Time: 9 a.m.–1:30 p.m. (End time is approximate)
Location: Meet at the ABF store in the Mall: 587 Palm Canyon Dr. #110, Borrego Springs, CA, 92004 (next to Calico’s). The group will then caravan to the start of the route.
Cost:
PRIMARY VEHICLE + DRIVER:
Non-members: $65/vehicle
ABF members: $55/vehicle
Students: $32/vehicle
ADDITIONAL PARTICIPANTS IN VEHICLE:
Additional general participant: $20
Additional student participant: $10
Children 5 & under: FREE
Cancellation Policy & Scholarships: Please see our FAQs page to read our cancellation policy and learn about scholarship options.
What Previous Attendees Are Saying:
“The guides were fabulous - both the driving guides and the botanist/geologists type guides. And fabulous scenery”
“I like the fact that there are folks leading this that know the area and can tell us history and geology.”
“It was seriously amazing and we enjoyed every minute of it!!”
Tour Leaders:
Donna Roy and Arun Balakrishnan fell in love with Anza-Borrego when they accidentally first visited the park almost two decades ago and luckily saw Bighorn Sheep on eleven consecutive weekends. Their day jobs as AI/robotics engineer and software security engineer brought them to San Diego. Meeting the Bighorn Sheep started them down the path of learning about ecology and wildlife tracking. Over the years, they have enjoyed volunteering for the annual Bighorn Sheep count, Flat-tailed horned lizard surveys, Christmas bird count, Bio Blitz, tidepool surveys, and more. They are volunteer naturalists for the Anza-Borrego Desert State Park, certified California Naturalists via the University of California Environmental Stewards program, and certified wildlife trackers via the Tracker Certification North America Track & Sign certification program. They have served on the board of the San Diego Tracking Team and helped start wildlife track and sign surveys in Anza-Borrego.
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