West Virginia, and some other surprising places, is a geothermal hot spot, as seen in this cool map and others based on the same data. The data is also available as Google Earth overlays. Check it.
io9 article: http://io9.com/5689338/i-live-in-a-hot-spot
North America: http://twistedphysics.typepad.com/.a/6a00d8341c9c1053ef0133f5640d9c970b-pi
Google Earth: http://www.google.org/egs/index.html
