Old Faithful and Grand Geyser at Dawn, Yellowstone National Park, Wyoming
A long exposure captures plumes rising from eruptions of both Old Faithful (right) and Grand Geyser (left) at dawn in the Upper Geyser Basin of Yellowstone National Park, Wyoming. Yellowstone is home to the world's largest concentration of active geysers, with more than 400 geysers in its Upper Geyser Basin alone.