Depending on where you drill, you might end up in a situation where some layers come into contact with high-pressure water and start swelling, resulting in rais

Depending on where you drill, you might end up in a situation where some layers come into contact with high-pressure water and start swelling, resulting in raised surface levels. Most prominent example I know of, is the city of Staufen in Germany: https://en.wikipedia.org/wiki/Staufen_im_Breisgau#Geothermal_drilling_controversy https://en.wikipedia.org/wiki/Staufen_im_Breisgau#Geothermal... https://www.thelocal.de/20170818/this-historic-german-town-is-falling-apart-in-slow-motion-catastrophe https://www.thelocal.de/20170818/this-historic-german-town-i... To my limited understanding, this could have been prevented by a better geological survey.