Using exactly one ladder, 20 firefighters scaled the height of Mount Everest in a world-record assault in Cardiff.
Crews from South Wales Fire and Rescue Service clambered 8,848 m( 29,029 ft) – the equivalent of higher mountain in the world – on Saturday
The firefighters, dressed in full paraphernalium and wearing oxygen cisterns, departed up the ladder 1365 times in about four hours to finish the challenge.
Chief Fire Officer of SWFR Huw Jakeway said it was a unique challenge.
Starting at 11:00 BST the team, from Cardiff Central Fire Station scaled the ladder outside St David’s Shopping Centre in the Welsh capital.
The firefighters took 4 hours 17 minutes and 22 seconds to finish the world-record strive, cheered on by Fireman Sam.
Mr Jakeway told BBC Wales plenty of shoppers in the city stopped is in favour of firefighters in their charity challenge.
He announced: “This has never been did before so the team are looking to set “the worlds” record.”
After the challenge the gang tweeted: “We did it! We clambered the height of Everest in Full Kit/ BA’s! Great fun and great support.”