Reptiles and Amphibians
Reptiles and amphibians are cold-blooded animals whose bodies take on the temperature of their surroundings. They may be seen basking in the sun on warm rocks that make up the mountain. Cool nights usually send them into burrows or crevices to keep warm.
Several species of snakes and lizards inhabit the monument. Amphibians are somewhat less numerous since there is no permanent water source in the park.
YELLOWSTONE DIGITAL SLIDE FILE
Did You Know?
Sierra Grande is the largest feature in the Raton-Clayton Volcanic Field. An andesite shield volcano, it is 5 miles in diameter and reaches an elevation of 8720 feet.