Lakeshore Geyser in the West Thumb Geyser Basin in Yellowstone National Park |
Fishing Cone in Yellowstone Lake in the West Thumb Geyser Basin in Yellowstone National Park |
Bluebell (front) and Seismograph Pools in the West Thumb Geyser Basin in Yellowstone National Park |
Black Pool in the West Thumb Geyser Basin in Yellowstone National Park |
Looking into Black Pool in the West Thumb Geyser Basin in Yellowstone National Park |
Big Cone in the West Thumb Geyser Basin in Yellowstone National Park |
Close up of the Abyss Pool in the West Thumb Geyser Basin in Yellowstone National Park |
The Abyss Pool at West Thumb Geyser Basin in Yellowstone National Park |
Percolating Spring in the West Thumb Geyser Basin in Yellowstone National Park |
Collapsing Pool in the West Thumb Geyser Basin in Yellowstone National Park |
Mud pool in the Thumb Paint Pots section of West Thumb Geyser Basin in Yellowstone National Park |
Bubble about to burst in Thumb Paint Pots at West Thumb Geyser Basin in Yellowstone National Park |
Ledge Spring in the West Thumb Geyser Basin in Yellowstone National Park |
Surging Spring in the West Thumb Geyser Basin in Yellowstone National Park |
Mimulus Pool in the West Thumb Geyser Basin in Yellowstone National Park |
Lower Yellowstone Falls (308 ft) in the Grand Canyon of the Yellowstone in Yellowstone National Park |
Yellowstone Falls in the Grand Canyon of the Yellowstone in Yellowstone National Park |
Close up of Lower Yellowstone Falls (308 ft) in the Grand Canyon of the Yellowstone in Yellowstone National Park |
Lower Yellowstone Falls in the Grand Canyon of the Yellowstone in Yellowstone National Park |
Dead tree polished by nature in the Grand Canyon of the Yellowstone in Yellowstone National Park |
Upper Yellowstone Falls (109 ft) in the Grand Canyon of the Yellowstone in Yellowstone National Park |
A cascading falls in the Grand Canyon of the Yellowstone in Yellowstone National Park |
Boiling mud pool at the Sulphur Caldron in Yellowstone National Park |
Harebell wildflowers at the Sulphur Caldron in Yellowstone National Park |
Delicate mud bubbles float on a pool in the Sulphur Caldron in Yellowstone National Park |
Bison rests near a crater of boiling mud at the Sulphur Caldron in Yellowstone National Park |
Boiling mud pool at the Sulphur Caldron in Yellowstone National Park |
Bison rests at the Sulphur Caldron in Yellowstone National Park |
Sizzling Basin in the Mud Volcano area of Yellowstone National Park |
The Mud Volcano in the Mud Volcano area of Yellowstone National Park |
Stick and plants on the edge of a boiling pool in the Mud Volcano area of Yellowstone National Park |
Overview of the Churning Caldron in the Mud Volcano area of Yellowstone National Park |
Mud geyser of the Churning Caldron in the Mud Volcano area of Yellowstone National Park |
Churning Caldron in the Mud Volcano area of Yellowstone National Park |
Sour Lake in the Mud Volcano area of Yellowstone National Park |
Bison in the Mud Volcano area of Yellowstone National Park |
Plants in a boiling pool in the Mud Volcano area of Yellowstone National Park |
Dragon’s Mouth Spring roars in the Mud Volcano area of Yellowstone National Park |
Steaming pools across the Yellowstone River from the Mud Volcano area of Yellowstone National Park |
Bison rests next to a steaming pool across the Yellowstone River from the Mud Volcano area of Yellowstone National Park |