ROCKY MOUNTAIN NATIONAL PARK, Colo. - Efforts are being scaled back in the search for a missing Texas man in Rocky Mountain National Park.
Troy Green, 39, arrived at the park on Thursday, but failed to show up for a conference in Denver the next day.
Park rangers found Green's rental SUV in the Bear Lake parking lot on Friday, but haven't been able to find Green.
Rangers, searchers, helicopters, dog teams and a large number of recreational users have been in the area over the last three days, but officials said they haven't found any clues.
Aerial searching detected several large slab avalanches on the northeast aspects of peaks along the Divide but no evidence that they were human triggered.
A small team of rangers will continue to search for Green in areas of what is being called challenging terrain in the Bear Lake and lower Tyndall Gorge areas.
Anyone visiting the Bear Lake area on Thursday of Friday is asked to call Rocky Mountain National Park at (970) 586-1204.