Authorities were called out to Bidwell Canyon Bridge on Lake Oroville around 1:30 a.m. this morning for a report of a 25 year-old man that had fallen onto some rocks. Deputies say a group of people had been boating earlier in the evening and decided to climb a cliff near the bridge. The man reportedly slipped and fell about 15 feet suffering some head trauma. He was unresponsive when rescue crews arrived, but deputies say he later regained consciousness. Butte County Search and Rescue crews were able to hoist the man up using a pulley system around 4:30 a.m. He was taken to Enloe Medical Center, but it is unclear how severe his injuries were.