All Yellowstone National Park entrances have been closed in the wake of "unprecedented" rainfall causing "substantial flooding, rockslides and mudslides on roadways," the National Park Service announced Monday. Some roads have been washed out and others are covered in mud or rocks, according to the park service. Power has also been knocked out in multiple parts of the park, officials said. #yellowstone #yellowstonenationalpark #flooding READ MORE: https://6abc.com/yellowstone-flooding-national-park-closed-river/11958771/