Upper Geyser Basin, Yellowstone National Park, Wyoming, 11:40am, July 18, 2005
Upper Geyser Basin, Yellowstone National Park, Wyoming, 11:40am, July 18, 2005
By this time, Vent Geyser (left) has joined Grand in eruption. Although it appears a minor part of Grand's eruption, Vent reaches heights of up to 70 feet.