Rocky Mountain National Park remained closed for a fifth day Tuesday as crews worked to assess the damage in the wake of last week's torrential rain storms.

So habituated to human visitors are mountain goats at Glacier National Park that they can seem as docile and innocent as sheep. To better understand exactly how habituated mountain goats have become to human invasions, the park and the University of Montana are studying how the goats are affected by people, trails, and roads in the Logan Pass area.

While you'll be able to visit the North Rim of Grand Canyon National Park beyond mid-October, weather permitting, many of the visitor services and facilities will begin closing for the winter on October 15.

Rocky Mountain National Park isn't the only unit of the National Park System that's been closed by floodwaters. Down in New Mexico, Gila Cliff Dwellings National Monument remained closed Monday as a result of heavy precipitation the past few days.