It is a milestone in their high-altitude career: Bavarian professional slackliners Friedi Kühne and Lukas Irmler have broken the world record at a height of 2,500 meters between two hot-air balloons.

Check out this breathtaking moment as a professional slackliner completes the highest slackline walk ever attempted above ground. Trump proposes new monument near Lincoln Memorial Video of brutal ...

Six slackliners crossed a 148-m line suspended 1,008 m above Venezuela's Angel Falls, setting a new record.