House Built Into Mountain Side
A house built into a rock wall cave house has to be in utah. Much of the house is dug into the side of the mountain and the reinforced concrete roof is topped with native plants in two feet of dirt. https://media.architecturaldigest.com/photos/578e64b3769e8a521ed70a34/master/w_400%2Cc_limit/Mountain-Homes-02.jpg 11 Mountainside Homes With Unbelievable Views Architectural Digest People build houses on mountains for unobstructed views of the surroundings.