• Climbers on Morning Glory Spire

    City Of Rocks

    National Reserve Idaho

Reptiles and Amphibians


Species checklist

Desert Horned Lizard

Desert Horned Lizard

NPS Photo

Skinks and Lizards

__ Longnose Leopard Lizard

__ Common Sagebrush Lizard

__ Pygmy Short-horned Lizard

__ Desert Horned Lizard

__ Western Fence Lizard

__ Tiger Whiptail

__ Western Skink

Western Rattlesnake

Western Rattlesnake

photo by Brienne Stekly


__ Terrestrial Garter Snake

__ Gopher Snake

__ Western Rattlesnake

__ Striped Whipsnake

__ Rubber Boa

__ Eastern Yellow-bellied Racer



_ Boreal Chorus Frog

Did You Know?

Twin Sisters granite spires against a summer sky.

The Twin Sisters in City of Rocks National Reserve are made up of different rocks. The darker sister is made of granite that is 2.5 billion years old and is some of the oldest rock in the Lower 48 states. The lighter sister is made of granite from a younger formation that is 25 million years old.