Volcano plugs! Yeah, that’s the ticket!
Or vent them and use them to produce geothermal energy.
Or vent them and use them to produce geothermal energy.
My interest was peeked and did some research on the subject of geothermal energy. Quite interesting!
......HOW MUCH GEOTHERMAL ENERGY IS THERE?
Thousands more megawatts of power than are currently being produced could be developed from already-identified hydrothermal resources. With improvements in technology, much more power will become available. Usable geothermal resources will not be limited to the "shallow" hydrothermal reservoirs at the crustal plate boundaries. Much of the world is underlain (3-6 miles down), by hot dry rock - no water, but lots of heat. Scientists in the U.S.A., Japan, England, France, Germany and Belgium have experimented with piping water into this deep hot rock to create more hydrothermal resources for use in geothermal power plants. As drilling technology improves, allowing us to drill much deeper, geothermal energy from hot dry rock could be available anywhere. At such time, we will be able to tap the true potential of the enormous heat resources of the earth's crust........
http://geothermal.marin.org/pwrheat.html#Q11