A 12-year-old girl was hospitalized in critical condition Monday after she was struck by a falling rock at Camp Erdman, according to Honolulu Emergency Medical Services.
EMS officials believe she was hiking when the rock fell at around 10:30 a.m.
State officials say a group of campers used a known, marked trail to get to a climbing area about 30 minutes from the road.
The group was doing a safety briefing at the base of the hiking cliff when a rock fell and hit her on the head, according to fire officials.
Some children were wearing helmets, but she was not. The rock knocked her unconscious with no signs of life.
The rock was believed to be no heavier than 25 pounds and is estimated to have fallen no more than 20 feet.
One chaperone took the rest of the kids back while another stayed with the girl. She showed minimal signs of life when rescuers arrived.
The girl was airlifted to Dillingham Airfield, then transported to Queen's Medical Center by ambulance, according to fire officials.
Fire officials also say the girl was with a party of 12 to 15 children with at least two chaperones.
The Department of Land and Natural Resources has an investigator at the scene and is inspecting the area.
The YMCA of Honolulu Metropolitan Office issued this statement:
"A YMCA summer camp participant was injured at Camp Erdman while participating in a scheduled activity. We do not have all of the details confirmed at this time, nor can we release the participant's name or age due to confidentiality policies regarding a minor. We are in contact with the family and our thoughts and prayers are with the family."
According to the Camp Erdman website, this week was called "traditional camp" with activities, including landscape exploration.
Children, ages 6 to 16, were dropped off on Sunday and are scheduled to be picked up this Friday.