Mesa Verde National Park, Colorado, September 12, 2009
Spruce Tree House is the third-largest village at Mesa Verde, within several hundred feet of a spring, and had 130 rooms and eight kivas. It was constructed sometime between 1211 and 1278. It is believed anywhere from 60 to 80 people lived there at one time. Because of its protective location, it is well preserved. (Wikipedia)
The cliff dwelling was first discovered in 1888, when two local ranchers chanced upon it while searching for stray cattle. A large tree, which they identified as a Douglas Spruce (later called Douglas Fir), was found growing from the front of the dwelling to the mesa top. It is said that the men first entered the dwelling by climbing down this tree, which was later cut down by another early explorer. (National Park Service)