A 58-year-old southwest Idaho man has died at Brundage Mountain Resort in central Idaho near McCall in a mountain biking accident.
Authorities say Leo Nill of Nampa died Saturday.
Adams County Sheriff Ryan Zollman on Tuesday says the death has been ruled an accident.
Mike Mauden was among a group biking with Nill. He says the forks on Nill's bike came apart when he jumped over a rock on the Elk Trail, one of the resort's summer bike trails.
Brundage Mountain Resort has offered lift-served mountain biking in the summer since the early 1990s.
Nill's accident is the first mountain biking fatality at the resort.