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 and Greeter at Jawbone Station.

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

Dedicated to Ed Waldheim

Man standing next to dirt bike

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 Supporters:

Shaw Charitable Fund


Please join us in thanking the sponsors of our 26th Moose Anderson Day:

Bureau of Land Management

CarMax Foundation
Mojave Gold