World’s Largest Mountaintop Snow Fort Returns to Keystone for the 2022-23 Season Jessica HughesJanuary 13, 2023 After a two-year hiatus due to COVID, Keystone’s snow fort returns this year and it’s even bigger and better than before. The World’s Largest Mountain... 303 MagazineFeaturedLifestyle + CultureOutdoor + Travel3 min read