This is Horse Camp Hut, one of many huts that are spread through the Australian high country. Most were built by cattlemen, although some were built as shelters during construction of the Snowy Mountains Scheme. The cattlemen (they are always referred to in the masculine although there were women around too) had leases entitling them to graze cattle in summer. In winter this area is snow covered. Horse Camp is a SMA hut.
The cattle did a lot of damage. They were banned in NSW a while ago, but some still graze in Victoria's high country.
The huts are very basic. They are mostly open to the public as shelters, but they are hotbeds of intestinal instability because they concentrate people.
Horse Camp was the first alpine hut I slept in, about 35 years ago.