Yellowstone is one of the most geothermally active places on the planet.

It is a fissure in the planet's surface from which geothermally heated water comes out.

The water is heated geothermally from an estimated depth of three kilometres.

The farm here sells fresh vegetables from its geothermally heated greenhouses.

Much of the town is heated geothermally.

The small community of Lowman is settled in a geothermally active region.

Amenities include two restaurants, a sauna and a geothermally heated swimming pool.

Every town in Iceland has a swimming pool, usually geothermally heated and part of social normality.

It is geothermally active and is being used to generate growing quantities of clean electrical power.

The water is either heated tidally or geothermally.

"Any fool would know that geothermally warmed lakes are hot only in the deeper portions.

Buildings and interior water are geothermally heated.

Onsen by definition use naturally hot water from geothermally heated springs.

Reykjavik's oldest pool (built in 1937) uses fresh water from the mountains, which is geothermally heated.

This happens from solution in ground and surface waters, and/or geothermally heated hot-springs.

Akureyri has been heated geothermally since the late 1970s.

The organic garden produces fresh herbs and vegetables year round from "the geothermally heated greenhouse, built in 1996."

The geothermally heated water then rises back toward the surface by convection through porous and fractured rocks.

They look forward, they say, to snuggling up by candlelight in front of their geothermally powered radiators.

The inn's 50 motel-style, geothermally heated rooms range from $77 to $250 for a double.

Geothermally heated hot springs sometimes produce similar (but less porous) carbonate deposits known as travertine.

They are the result of deposits formed when geothermally heated water is emitted from deep sea hydrothermal vents known as "black smokers".

Geothermally heated outdoor pools are widespread, and swimming courses are a mandatory part of the national curriculum.

A hot spring is a spring that is produced by the emergence of geothermally heated groundwater from the Earth's crust.

It's fascinating that we may be able to set up colonies on other planets or moons that we could potentially power geothermally.