ESTES PARK - JULY 22: U.S. Secretary of the Interior Ryan Zinke explores Rocky Mountain National Park's Alluvial Fan Trail area following a press conference in which Zinke and U.S. Senator Cory ...

The Alluvial Fan area in Rocky Mountain National Park will be closed July 27-Sept. 24 for major trail work. The trail will be closed on weekends as well as weekdays, according to a news release.