Firefighters rescued a 17-year-old who fell and struck his head at Glen Onoko Falls on Thursday.

Witnesses said the teenager was temporarily knocked unconscious, but he was awake and alert as he was loaded into an ambulance.Crews were dispatched for a rescue at the second falls around noon.It took them about 15 minutes to reach the victim and assess his condition, Jim Thorpe Deputy Fire Chief Vince Yaich said.About 45 minutes later, firefighters and EMS workers carried him down from the trail in a Stokes basket.Firefighters from Jim Thorpe, Nesquehoning, Lehigh & Lausanne, Lehighton, Penn Forest and Summit Hill all responded, as well as Lehighton Ambulance.Yaich said the extra manpower was needed because of washouts along the trail.The teen suffered a head injury and a cut on his hand, but was expected to fully recover.He was identified as Nesquehoning resident Klayton Keeler. Keeler had been hiking on his own near the second falls when he fell, according to a witness.His father, Keith, was in another part of the Glen Onoko area, but not on the trail, when the fall occurred.The witness, Michael Walker of Bucks County, said he was the first person to aid Keeler after he fell. Walker said he called Keith Keeler while his girlfriend called 911."It's just lucky he is going to be alright," he said.Keith Keeler said he was able to make his way up to where his son fell as first responders started their hike."I don't think I ever scaled that trail as fast as I did," he said.Keith Keeler gave his thanks to the first responders, and offered advice to those who decide to hike the falls."You definitely have to be careful on the trail," he said. "I told him, 'You're very fortunate, because a lot of people aren't able to walk out of here."Last May, an 18-year-old man died in a fall at the Glen.There have been about 10 rescues in the Glen Onoko area this summer, according to Yaich. That includes rescues along the river.While the parking area is part of the Lehigh Gorge State Park, the falls are located on land managed by the Pennsylvania Game Commission.There are signs at the base of the trail advising hikers of the risks presented by the falls.Yaich said the advice for hikers who visit the Glen hasn't changed."The same thing we always tell them. Proper footwear is essential, you should know your terrain. It's just as treacherous in the falls area when there's no rain as there is after a rain," he said.