The Moon and Erupting Old Faithful
Yellowstone National Park, Wyoming.
Eruptions from this geyser can shoot 3,700 to 8,400 US gallons (14,000 to 32,000 liters) of boiling water to a height of 106 to 185 feet (32 to 56 m) lasting from 1.5 to 5 minutes. The average height of an eruption is 145 feet (44 m). Intervals between eruptions can range from 45 to 125 minutes, averaging 90 minutes apart.
Nikon D200; Nikkor AF 50mm f/1.8D.