Excelsior Geyser Crater

Excelsior Geyser Crater is a unique-looking geothermal feature located in the Midway Geyser Basin of Yellowstone National Park, Wyoming. It is characterized by a large hot spring, surrounded by colorful thermal pools, crusted sinter formations and the bubbling geyser. The crater measures roughly 35 meters (115 feet) in diameter and is one of the largest hot springs in the world. It is also very photogenic due to its bizarre, multi-colored rainbow pools that are produced by rich microbial mats. Excelsior is fed by an underground magma chamber and is usually around 100°C (212°F). The intense heat makes it a difficult yet rewarding photographic environment to explore. It is advised to wear sturdy boots, because the area is full of sinter - deposits of limestone formations - which can get scalding hot when in direct contact with the extremely hot water. Be sure to stay on the safe boardwalks and make sure to bring plenty of water, snacks and protective gear.