Photo #21353 - Roadside highway turnout West side of highway. Access to Beryl Springs Thermal Walkway Area. The spring gets its name from a blue-green gemstone. Photo looking at Beryl Springs walkway area YELLOWSTONE NATIONAL PARK - Madison to Mammoth Hot Springs - Montana / Wyoming State Line With half of the earth’s geothermal features, Yellowstone holds the planet’s most diverse and intact collection of geysers, hot springs, mudpots, and fumaroles. Its more than 300 geysers make up two thirds of all those found on earth.