WORTH TWP — An Erie man was flown by medical helicopter following an all-terrain vehicle accident Sunday afternoon at an outdoor recreation center, authorities said.

The ATV, weighing about 500 pounds, landed on top of the man, believed to be his late-50s, at the Slippery Rock Dunes Outdoor Park on Barron Road in Worth Township.

The man, whose name was not immediately available, was riding with friends on one of the wooded trails about 12:45 p.m. when the accident happened.

“He was going up hill and his quad rolled over (or flipped backward), and it landed on his chest,” said Ryan Hanchosky, assistant chief for the Slippery Rock Volunteer Fire Company.

The man’s friends called 911. Firefighters used the department’s utility truck to rescue the man, who was about one-half mile into the woods.

“We put him in a Stokes basket and carried him down the hill,” Hanchosky, said. “He was conscious but in a lot of pain and he was having a lot of difficulty breathing.”

Paramedics started an intravenous line on him to deliver fluids and pain medication. He possibly suffered internal injuries, said rescuers, who described the injuries as “moderate.”

The victim was taken by ambulance to the nearby Evening Star Motelon Route 108 where a STAT MedEvac helicopter landed and flew him to UPMC Hamot hospital in Erie.