Heavy snow is correct. This is Winter Park, CO and I used to ski there in the 70's. Today it is unrecognizable to me. We actually used rope lifts with a knot that you held between the legs to get to the top; if your skis got out of the burrowed out tracks, you got dumped.

Since I have worked weekends at Habitat for Humanity for 28 years, I am always interested in construction. When I saw this I assumed there were steel beams inside the wood poles. Had no idea there would be so much interest.