This fascinating geologic formation offers plenty to discover on its short set of trails. This semicircular rock formation that rises from the high desert was once an island in a giant ice age lake, and the rock walls show ancient layers of mud and rock carved by the water's movements long ago. Falcons nest high in the rocks, and you might catch a glimpse of a rabbit or two. In the summer months, this spot can be quite warm and you have to watch for rattlesnakes, but in the winter, you just might have it to yourself along with the frozen sagebrush. Human artifacts dating back 9,000 - 13,000 years were found in a nearby cave. A really cool spot to explore no matter the season.