Thrill-seekers visiting Alton Towers Resort on Saturday were given more of a scare than they bargained for after getting stuck on The Smiler roller-coaster.
Riders were stuck about 100 feet in the air on the coaster for about 20 minutes.
A spokesman for the resort, which reopened on March 22 after its winter break, said: "All of the roller-coasters at the Alton Towers Resort have incredibly sophisticated computer systems which are designed to ensure that the rides run safely.
"They are so sensitive that something as simple as a train being out of place on the track can cause them to stop, as they are designed to do.
"Whilst we understand that this is frustrating for our guests and we are of course sorry for any inconvenience, we make no apologies for the safety or sensitivity of our systems."
The £18 million ride, which was launched last summer, broke a Guinness World Record for the most loops over its 1,170 metre length.
But, it is not the first time that the ride has broken down.
Several malfunctions last year, including reports of parts falling off the roller-coaster and hitting passengers, meant the ride's launch had to be delayed, and led to numerous closures.