Pingvellir (Thingvellir) National Park in Iceland's Golden Circle is a rift valley between the North American and Eurasian tectonic plates. http://www.traveladdicts.net/2010/11/golden-circle-iceland.html#more
A lot of Icelanders have charming summer houses, cabins and cottages with outdoor hot tubs in the Icelandic landscape. Many of the houses are almost hidden by trees and hills in the valleys, making privacy easier. The Icelanders come here to relax with their families as a part of culture. You can rent one, when you travel here on vacation, and enjoy to relax in the outdoor hot tub watching the northern lights dance before your eyes in winter. Ahh, sounds lovely, right? We want to go too.