One person was killed and 12 tourists were trapped underground when an elevator in a disused Colorado gold mine malfunctioned during a tour on Thursday.
The incident occurred during the Mollie Kathleen Gold Mine Tour, which takes visitors 1,000ft underground.
A group of 11 visitors were on board the elevator trolley system when the mechanical failure occurred, killing one person and injuring four.
Twelve more people were stuck in a tunnel for several hours as they waited for the elevator to be fixed.
Officials did not release further details about what went wrong, citing an active investigation.
“We did have one fatality that occurred during this issue at 500ft,” Teller County sheriff Jason Mikesell told a press conference.
The 11 people on board the elevator at the time, including two children, were brought safely to the surface with the assistance of the mine operators and fire department officials.