Sulphur Cauldron

The Sulphur Caldron is a highly acidic hot spring in Yellowstone National Park, with a pH of approximately 1-2, similar to car battery acid or stomach fluids. The area is home to unique microorganisms that thrive in the ultra-hot waters, creating a colorful display. Visitors can explore the Mud Volcano area, which features many mudpots and hillsides strewn with trees cooked by steam. The hydrothermal features in this area are some of the most acidic in the park, and the smell of rotten eggs is caused by the hydrogen sulfide gas. It's essential to exercise caution when visiting the thermal areas, staying on boardwalks and trails, and supervising children at all times. The area is also home to various wildlife, including bison, which can be dangerous and unpredictable, so it's crucial to keep a safe distance