Dale Steele, age 12s of Kershaw, So. Carolina for her question:

Where are Geysers found?

Geysers abound in Iceland, New Zealand and our own Yellowstone National Park. These are regions where not so long ago the ground seethed with volcanic activity. Geysers and volcanic activity are directly related and in Iceland the two events still go on side by side.

A volcano is a vent or tunnel down to a deep pool of magma miles below the ground. This magma is a reservoir of molten rock, steam and seething gases. The main vent usually branches into a network of cracks and crevices. When the volcano erupts molten lava pours up from below. It floods over the ground and the surface lava soon cools the air.

Heat may be trapped below this crusty surface and it is this trapped heat which causes geysers to form. Ground water drains into the underground crevices. It boils and puts up a plume of steam and hot water ‑ a geyser erupts.