Upper Geyser Basin (Main South & North Area)

Yellowstone National Park has approximately half of the world's geysers-and most of them are located at the Upper Geyser Basin. One square mile contains at least 150 of these hydrothermal wonders, making this area the most densely concentrated geyser region in the world.
While all the crowds gather to watch Old Faithful erupt, follow a series of boardwalks and paved and dirt trails through Yellowstone’s Upper Geyser Basin to see more incredible geysers and hot pools and find a sense of solitude. At Upper Geyser Basin, you can walk up to 6 miles to experience the highest concentration of geysers in the world.
Along the way you’ll pass stunning blue, orange and yellow hot pools, have to duck from the mist of erupting geysers, watch the Firehole River steam and hopefully catch a glimpse of the park’s abundant wildlife from grazing bison to herds of elk.
The Upper Geyser Basin is famous for hosting Old Faithful Geyser. But there is much more in the area than just this famous geyser. The Upper Geyser Basin also boasts the largest concentration of geysers in the world, including many of the worlds largest geysers.
Upper Geyser Basin Map
Five of the largest geysers are predicted by the Park Rangers. All of these geysers, Castle, Daisy, Grand, Old Faithful and Riverside, are worth seeing but if you can only see one, try to see Castle.