description Herľany Geyser Overview
The Herľany Geyser is a cold-water geothermal spring located in the village of Herľany in eastern Slovakia. Unlike geothermal geysers, it is driven by accumulating carbon dioxide rather than heat, which forces groundwater to the surface. The geyser was formed in 1872 during an effort to drill for mineral water for a local spa. Eruptions can reach heights of 10 to 15 meters, though the intervals between them are unpredictable.
Since 1987, the site has been designated as a protected national natural monument due to its unique geological properties.
help Herľany Geyser FAQ
What makes the Herľany Geyser different from the geysers in Yellowstone?
Unlike the heat-driven geysers found in volcanic areas like Yellowstone, Herľany is a cold-water geyser. Its eruptions are driven by a build-up of carbon dioxide gas deep underground rather than geothermal heat.
Where is the Herľany Geyser located?
The geyser is situated in the small village of Herľany, which is located in the Košice Region of eastern Slovakia. It sits within the volcanic Slanské Hills, which naturally trap groundwater.
When did the Herľany Geyser first erupt?
The geyser was accidentally created in 1872 when a borehole was drilled in an attempt to find a thermal water source for a local spa. When the drill tapped into the carbon dioxide and water chambers, it triggered the first massive eruption.
How often does the Herľany Geyser erupt today?
While it used to erupt quite reliably, the geyser's activity has become erratic over the decades due to changes in the local water table. When it does erupt, the water is propelled to heights of around 10 to 15 meters.
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