Desert Tortoise Research Natural Area (DTRNA)

The Desert Tortoise Research Natural Area (DTRNA) is 39.5 square miles of prime, natural habitat set aside for the desert tortoise, the official California State Reptile. No OHV use is allowed in the preserve. The preserve boasts rich flora and fauna representative of the intricate Mojave Desert ecosystem. In 1980, the BLM recognized the significance of the DTRNA by designating it an “Area of Critical Environmental Concern” and a “Research Natural Area.” The Interpretive Center, with parking lot, information kiosk, restroom, and access to self-guided trails, is located about 4 miles northeast of California City just off the unpaved Randsburg Mojave Road. More information can be found at:

Mr. Bob, Desert Tortoise

You can find this discovery point via GPS at N35.191361, W117.880579, or in section E-10 with the Jawbone Canyon OHV Map, Ed. 14.1.

Dedicated to Ed Waldheim

Founder of the Friends of Jawbone (FOJ)

Friends of Jawbone is a non-profit corporation under section 501(c)(3). If you or your business would like to support Friends of Jawbone, please click here.

Special Thanks To:

Please join us in thanking our Business Supporters:



Southern California Overland Trail Association


Please join us in thanking the sponsors of our 25th Moose Anderson Day:

Bureau of Land Management
Karl’s Hardware
CSI Electrical Contractors

Andrew & Cherie Holloway
RSI Petroleum
Bank of the Sierra
Green Tea Garden
Dave & Shelly Hammersmith
Crystal Geyser
Kern County Search and Rescue

Peak Productions
West Best Pizza
Mojave Off Road Adventures
Jawbone Canyon Store
Fun Time ATV Rentals

Jawbone Channel
Doug & Katie Varner
Crystal Geyser
Doug and Katie Varner

Indian Wells Brewery
Waste Management

Jawbone Crazy
Friends of Oceano Dunes
Biker Kings
Alta One
Point Mugu 4×4 Club
Mojave Gold
Happy Trails Data Management
IMC Real Estate