Visitors had been flocking to Yellowstone during its 150th anniversary celebration. The southern loop provides access to Old Faithful, the rainbow-colored Grand Prismatic Spring, and the Grand Canyon of the Yellowstone and its majestic waterfall. It can be accessed from the park's south, east and west entrances.
“It is impossible to reopen only one loop in the summer without implementing some type of system to manage visitation,” Yellowstone Superintendent Cam Sholly said in a news release. “My thanks to our gateway partners and others for helping us work out an acceptable temporary solution for the south loop while we continue our efforts to reopen the north loop.”