Yellowstone National Park

Yellowstone National Park delivers big when it comes to geysers and hot springs. In fact, Yellowstone National Park is a super volcano with the world’s largest active geyser field (including Old Faithful), boasting more than 10,000 geysers, steam vents, mud pots (also known as a mud volcano) and hot springs. About 250-300 Yellowstone geysers erupt yearly, some faithfully and others unexpectedly. Source http://yellowstonepark.com