Hot Spring

A hot spring, thermal spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma or by circulation through faults to hot rock deep in the Earth's crust.

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Source: Wikipedia · Image: Wikimedia Commons · Public domain

SAUNACRAFT

The art of the sauna — design, heat, and the culture of steam bathing.

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Museum entries, images, and facts are drawn from Wikipedia and Wikimedia Commons, used under public-domain and Creative Commons licenses.