Yellowstone, the country's first national park and one of its most popular, will begin a phased reopening Monday when the gates come down at its Wyoming entrances only. The park closed March 24, largely at the request of local officials in towns and states surrounding the park.
https://www.npr.org/2020/05/17/856364234/yellowstone-national-park-set-to-reopen-but-with-caveats