Norris Geyser Basin - Back Basin - Steamboat Geyser
Steamboat Geyser is the world's tallest currently-active geyser. During major eruptions, water may be thrown more than 300 feet (90 m) 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. The geyser was dormant from 1911 to 1961.