Footage of geysers in California being to steam engines for industrial use, United States of America.
An artistic montage of the Mammoth Hot Springs in Yellowstone National Park.
Russian scientists explore the ways of harnessing natural steam.
Various shots of an area of thermal activity in Japan.
Thermal activity areas in California - jets of steam emerge from rocks.
Men harness the power of thermal activity.
New Zealand's thermal springs are used as source of electrical power.
Good footage of the Valley of the Geysers in New Zealand.