Death Valley National Park
The Mojave Desert Tortoise is the largest reptile of the Mojave Desert. They walk on ground that can get over a 130 degrees. They avoid the heat in their giant burroughs where it is about 40 degrees cooler and hibernate there durning the winter. They can live for a year without water or maybe even 2 years without water.
In certain areas of the Mojave the average number of tortoises per square mile in the 1920's was 100, now in the same areas there are less then a dozen per square mile in the same areas. A host of animals depend on their large burroughs for homes. It's an endangered species because it's population has dwindled in recent years. In order for it to be removed from the endangered species list it's population must grow and be sustained for 25 years