We have three located in various locations throughout the ranch. One near the old homestead that was torn down in the late 80's and the other two are near old falling down hunting shacks. All three were built near the edge of a hill and have slid downhill some, but all are still functional and used when needed. The best one is near the old homestead and the door fell off a number of years ago. It makes for a nice view out over the valley when you're sitting their doing your business. Not sure when they were built but all were old when we bought the place almost 30 years ago. They have held up better than any of the other structures near them and now sit along side buildings that are badly deteriorated or even collapsed.