[Wyoming] Yellowstone’s Mammoth Campground Moves to First-Come, First-Served Oct. 16; App Payment Required
Recreation.gov says Mammoth Campground will shift to first-come, first-served sites and Scan & Pay payments beginning October 16. The campground remains open in winter without hookups, but differing official dates for the transition and RV-length limits mean travelers arriving near the changeover should verify details on site.









