Sulphurdale is a ghost town in Beaver County, Utah, United States.

[2] The site that was to become Sulphurdale was surveyed by Charles Dickart, who discovered a large body of sulfur ore just south of Cove Fort in 1870.

Minimal work was done until 1883, when a thermal plant was built to process the extracted sulfur.

[3] Twice every week, freighters hauled 20 tons of sulfur to the Union Pacific loading docks at Black Rock.

[5] The hydrothermal system it exploits is one of the largest in the western United States, with temperature anomalies of up to 200 °C (392 °F) per kilometer.