Steamboat Geyser

Steamboat Geyser, in Yellowstone National Park's Norris Geyser Basin, is the world's tallest currently-active geyser. During major eruptions, water may be thrown more than 300 feet into the air.

Steamboat's major eruptions last from 3 to 40 minutes in length, and are followed by powerful jets of steam. Steamboat does not erupt on a predictable schedule with recorded intervals between major eruptions ranging from four days to fifty years.

(photo taken 2005)