Lower Geyser Basin is one of Yellowstone's largest hydrothermal areas, with boardwalks at Fountain Paint Pot and a scenic one-way drive along Firehole Lake Drive. The basin mixes mud pots, springs, steam vents, and geysers, including Great Fountain Geyser, whose eruptions are forecast but still require patience. It is a useful stop between Madison and Old Faithful, especially for travellers who want a broader look at Yellowstone's geothermal landscape beyond the park's most famous single features.