A cleanup started Thursday after thousands of pounds of rocks fell on the Enola Low Grade Trail in Manor Township.
Duane Hagelgans, of the Blue Rock Regional Fire District, said about two dozen people were on the trail when the rocks fell Wednesday.
“Nobody was hurt,” Hagelgans said.
The rocks, some of which are about 20 feet wide, knocked over power lines and set trees on fire.
Hagelgans said it’s believed last week’s heavy rains caused the rocks to fall.
“We’re assuming that it expanded and contracted in the veins in between the rocks, and then when all this water came, it eventually got to the tipping point,” he said.
Crews on Thursday started to remove some of the largest boulders on the trail, which is near the Turkey Hill Dairy, so the power lines could be fixed.
Amtrak owns the power lines.
“The power lines have to be replaced in a final mode,” Hagelgans said. “Today, they just temporarily re-energized them until crews can come down here and put in new I-beams.”
The state Department of Environmental Protection was on the trail Thursday to check the stability of the area.
Hagelgans said it could be days until the trail is open again.