Biscuit Basin

Biscuit Basin contains a small collection of thermal features. Many, however, are small, gem-like encrusted pools and geysers, including Silver Globe Spring, Sapphire, and Black Opal pools, Jewel, Cauliflower, and Black Pearl geysers. The Firehole River and a highway divide the basin. Biscuit Basin is an isolated thermal group and is actually a part of the Upper Geyser Basin. (Yellowstone National Park)