ASPEN, Colo. (AP) -- Authorities have released the name of a man who fell more than 600 feet to his death while hiking Maroon Bells near Aspen.

The Pitkin County Coroner's Office identified the man Sunday as 34-year-old Derek Kelley of Colorado Springs.

Kelley was about 300 feet from the summit of North Maroon Peak when he fell after a boulder came loose Saturday morning. The Aspen Daily News tells KKCO, rescue personnel believe he had been wearing a helmet but was not wearing a harness.

Kelley's body was removed from the 14,000-foot mountain Saturday afternoon.