Fly Geyser

FLY GEYSER, United States — From a distance it looks like a reef that wandered into the desert: a mound of dripping mineral terraces in reds and greens, steaming against sagebrush and alkali dust. Fly Geyser is not a natural wonder in the usual sense. It is an accident that never stopped running — abandoned drilling that gave geothermal water a new route to the surface in Nevada's Hualapai Geothermal Flats.

Two accidents, one geyser

The popular shorthand says Fly Geyser was created in 1964. The documented drilling history starts earlier. In 1916, a well drilled in search of irrigation water struck geothermal water close to boiling point, far too hot for crops. It was abandoned, and dissolved minerals gradually built a cone around the outlet.

Then, in 1964, a geothermal energy company drilled a second well nearby. The water was hot, but not hot enough for its power project. The well was reportedly capped, but its seal failed. Water escaping through the second bore reduced pressure at the first, leaving the older cone dry while a new formation began growing nearby. The spectacle has an industrial origin; the heat, water and mineral deposition belong to the landscape beneath it.

A living sculpture

The geyser continually sprays water over cones and terraced pools. Minerals accumulate where the water emerges and flows away, while heat-loving microorganisms colour the wet surfaces. The result is both a rock formation and a habitat, its greens and rusty oranges spread across surfaces shaped by runoff.

A Southern Illinois University field study, based on sampling in June 2018, found varied microbial communities at Fly Ranch's geothermal sites. Its thermal imaging measured about 74°C at Fly Geyser's outflow and about 33°C at the base of the deposits. Those are historical observations at particular points, rather than a fixed temperature for every pool. They make the essential distinction clear: this is water to observe from the designated route, not to test with a hand or enter for a soak.

Field notes

Fly Geyser sits on private Fly Ranch in Washoe County, about 20 miles north of Gerlach, near State Route 34 and the Black Rock Desert. Burning Man Project purchased the ranch in 2016. Its current visitor program offers approximately three-hour guided nature walks with Friends of Black Rock–High Rock, including the wetland landscape and a close view of the geyser.

There is no casual drop-in access. Use the operator's 2026 reservation page to confirm available departures and check-in instructions. Travel Nevada lists this season from April 11 through November 14 on select Saturdays; that listing does not guarantee a place on a particular walk. Keep cameras tucked away when requested and use the designated photography time at the geysers. Pets are not permitted on the nature walks.

The operator's regional preparation guidance stresses limited services and mobile coverage. Bring water, sun protection and sturdy shoes, confirm current weather and road conditions before leaving Gerlach, and stay with the guided route. A colourful landmark still belongs to a remote desert.

Sources

• Friends of Black Rock–High Rock — Fly Ranch walks
• Operator — 2026 reservations
• Travel Nevada — 2026 walk season and visitor rules
• Southern Illinois University — Microbial Biogeochemistry from Fly Ranch Geysers, March 2019 report
• Fly Geyser — drilling history and references
• National Weather Service — Fly Geyser area point forecast
• Friends of Black Rock–High Rock — regional travel hazards

Researched feature, not a firsthand report. Confirm reservations, check-in and weather before travel. Fly Ranch is private land: do not trespass, touch the geyser or enter its hot pools; follow your guide's access and photography rules.

Photographs are archival views and may not show current conditions.