What is a Geyser?
Article by: Hobart M. King, Ph.D., RPG Old Faithful geyser of Yellowstone National Park blasts water about 150 feet into the air. copyright iStockphoto / Zuki. What is a Geyser? A geyser is a vent in Earth's surface that periodically ejects a column of hot water and steam. Even a small geyser is an amazing phenomenon; however, some geysers have eruptions that blast thousands of gallons of boiling-hot water up to a few hundred feet in the air.Read More