Soda Springs has the only captive geyser in the world. It was discovered in an attempt to find a hot water source for a swimming pool. On November 30, 1937, the drill went down 315 feet and unleashed the geyser. The extreme pressure is caused by carbon dioxide gas mixing with water in an underground chamber. The water is around 72 F. It is now controlled by a timer. It erupts every hour on the hour. the geyser reaches heights of 100 feet year round. The Visitor Center features interpretive signs and restrooms.