Agent, the guy I got one of my dogs from built a garage into the side of a hill. It was about 36 by 60 or 70, 11 ft ceiling, an 11 ft and an 8 ft garage doors, a man door and a small door out to the dog run so they could get fresh air and still watch the garage. On top was a rancher with the front door at ground level on the hill top. Oh, and part of the floor was dirt(modified stone) so he could pull his hobby bulldozer in the 11 ft door for service.
