Someone just sent me this. From last year, I think, so it may have been mentioned before, but I found it pretty cool:
https://www.outsideonline.com/2252141/abandoned-ski-documentary
https://www.outsideonline.com/2252141/abandoned-ski-documentary
Too bad it's only Colorado. They are all over the western US and Canada.
Cool little video. Amusing how it's still looks like a ski area after 30 years. In the north east trees grow so fast that you can hardly tell there was anything after that amount of time.