Deadly Mountain Bike Accident
A 21-year-old Rapid City man has died after a mountain biking accident in South Dakota's Black Hills.
Pennington County Sheriff's Sergeant Greg Foster says that the man was going down a steep hill when he hit a small rock in the trail and lost control.
The man had been riding with a friend near the Storm Mountain trail in Rockerville on Saturday afternoon when he hit a tree and consequently suffered a serious head injury.
Foster says the man was a very experienced rider and was wearing a helmet.
The young man's name has not been released.