The Beast roller coaster got stuck while climbing the second hill — a height of 141 feet — about 11 a.m., park officials said.
The ride malfunctioned when a device on the coaster intended to keep cars separated detected a problem and didn’t release the car. Thirty riders were stuck for about 10 minutes before being escorted off the ride, said Don Helbig, the park’s spokesman.
“It is not uncommon for a train to stop briefly on the lift hill of roller coasters to wait for the train ahead of it to clear a certain zone,” explained Helbig. “That’s how the safety system is designed. And that’s what happened this morning but the ride did not re-start.”
One rider called 911 after the train stopped and was transported to West Chester Hospital.
The ride reopened at about 12:30 p.m., said Helbig.
The Beast, which opened in 1979, is the world’s longest wooden roller coaster.