Hunter's Hot Springs (renamed Geyser Hot Springs in 2000) are natural geothermal springs located in Lake County, Oregon, United States, two miles (three km) north of Lakeview. The springs are named after Harry Hunter, who bought the springs in 1923. The best known feature within the geothermal area is Old Perpetual, which was once Oregon's only continuously erupting geyser. The geyser was formed as a result of a well drilling attempt while Hunter was developing a health resort at the springs.
The hot springs were discovered in 1832 by trappers from the Hudson's Bay Company, who noted in their journal that the water was unbearably hot. They are a small group of alkaline thermal springs in Lake County's Goose Lake Valley, two miles north of Lakeview.The temperature of the various springs ranges from 185 to 210 F.The spring water is alkaline with a high concentration of sulfate and other minerals. This environment supports large bacterial mats in the natural channels that drain the springs.As a result, the bacterial mat communities at the hot springs have been studied and analyzed by microbiologists from around the world.
The most striking feature at Hunter's Hot Springs is Old Perpetual. It once released a plume of 200 °F (93 °C) water 50 to 60 feet (15 to 18 m) into the air every 90 seconds. Because of its former regular and rapid eruption pattern, Old Perpetual geyser was one of Lake County's most popular tourist attractions.The geyser, still heavily promoted by the local Chamber of Commerce as a "must see" destination, has not erupted since June 2009, possibly due in part to the nearby geothermal development by the Town of Lakeview to supply the Warner Creek Correctional Facility with water for heating.Proposed further development of the site for geothermal power generation purposes threaten the entire hot springs wetlands.
The springs have long been known as Hunter's Hot Springs, and locals still refer to them that way. The 2000 owner renamed the resort to Geyser Hot Springs,however the USGS only recognizes the variant name Geyser Hunters Hot Springs.