At 8,202 feet, two German daredevils set a world record by walking across a slackline that was hung between two hot air balloons.Friedi Kühne and Lukas Irmler broke the Guinness World Record for the highest slackline walk when they flew above Riedering and crossed a slackline 8,202 feet above the ground.The previous record, set in 2021 at 6,236 feet, was beat by them.