While waiting for an eruption of Old Faithful in Yellowstone National Park, you might notice people walking along boardwalks on a hill in the distance. That’s Geyser Hill, one of the most amazing patches of thermal activity in the world. In this small area, there are about 30 geysers, some large and others small, along with many hot springs. Wandering among the thermal features on Geyser Hill is a great way to spend time before or after Old Faithful erupts, or a wonderful spot to learn more about geysers if you’ve already seen Old Faithful a few times.