Around here, there are still a few of those cabins and shelters that are available for use whether it be for overnight or emergency use. Fortunately they are far enough in the back country to keep the worst of the vandals home. The shelters are often kept in remarkably good user maintained condition. Some are just small one room / 1 bed setups, whereas others have multiple beds and often if you are the first people there, you may be joined later by others which makes for some interesting nights of pleasant conversation.