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There was no mistaking the luminous pink shorts and socks of climbers scaling the walls tonight - identified only by eerie ultraviolent light.

The UK’s biggest climbing league reached a spooky climax at Liverpool’s Hangar with 300 competitors taking part in the dark.

Participants were lit up by ultraviolet light, and faced a bizarre collection of obstacles trying to knock climbers off their perch, including swinging kayaks and coffins.

Some even dangled on rotating cubes and bounced off trampolines.

Ged MacDomhnaill, managing director of The Climbing Hangar, said: “The UV night is climbing re-imagined theatrically. It is a way of adjusting the focus onto the bizarre in an ultraviolet wonderland with glowing holds.

“People love the bizarre climbs that we cannot normally create for the public.”

The stunning UV environment is enhanced with video animation climbing challenges, glitter cannons and artwork,

The event was backed by British champion and world number two Shauna Coxsey from Runcorn.

The after-party, from 10pm-5am, featured Liverpool band The Boston Shakers, Bring the Fire Project performers and DJs from Burning Man festival in Nevada and Constellations in Liverpool.