A Swedish extreme sports fan has brought the house down with his new world record - for sprinting down the side of a building.
Tony Berglund , 47, is in talks with Guinness World Records officials after clocking up a time of just 34.76 seconds over the 100 metre course in Vasteraas, Sweden.
"It was great. I barely had to brake at all," he said.
House running - where athletes in harnesses hurl themselves face down over a sheer drop - came from a rock climbing technique which gets climbers down quickly in emergencies.
The technique originated from the similar technique used by soldiers as a military 'assault' on a target.
A soldier is belayed, allowing them to face down the descent and fire a weapon, and it is believed that soldiers used the technique to create the sport.