• Kelso Mountain


    National Preserve California

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  • Lower speed limits are temporarily in effect until road damage can be repaired

    The Superintendent has temporarily reduced the posted speed limit from 55 mph to 45 mph on all roads within the preserve as road crews work to repair damage from recent heavy rains. Call 760 252-6108 for more information.

  • Watch for storm damage on all roads

    Recent storms have caused flash flooding and damage to roads. Reduce speed and use caution when traveling through the park after storms. Call 760-252-6100 or 760-252-6108 for updates. Check our Current Conditions page for information on specific roads. More »


photo of red spotted toad

Red spotted toad

Liz Gallegos

Red-spotted toad
The red-spotted toad (Bufo punctatus) is the only naturally occuring amphibian in Mojave National Preserve. They are abundant at Piute Creek and Cornfield Spring, and have been found at many other springs.

Pacific treefrog
The pacific treefrog (Pseudacris regilla) is native to the Mojave River System. At Mojave National Preserve, it is found only in and around the large pond at the Desert Studies Center at ZzyZx and was probably introduced following the construction of the ponds.

California Treefrog
The California Treefrog (Hyla cadaverina) lives in the Peninsular Ranges of California including the little San Bernardino Mountains at at some desert oasis such as Indian Cove at Joshua Tree National Park. Although scientists have reported hearing them in the 1960s and the 1990s in springs in the Granite Mopuntains, there have neen no confirmed sightings.

Did You Know?

photo of detail on Kelso Depot.

The railroad town of Kelso in Mojave National Preserve was named in 1905 by railroad construction workers. Two men placed their names in a hat, along with that of a third who had just moved away. The name drawn from the hat was that of John H. Kelso, the man absent from the drawing. More...