Stephan Siegrist, the Swiss Mammut Pro Team professional alpinist, has set a world record by walking the world's highest highline at 5,700 meters above sea level. The highline where the athlete achieved the new record is 20-meter long and stretches between two rock towers on Kilimanjaro, in Tanzania. No one had ever walked a highline at such a height. The previous world record was set by Bence Kerekes in 2015 with a highline at 5,322 meters above sea level in Ladakh, India. Siegrist had previously crossed highlines on Alpine mountains such as the Matterhorn and Dufourspitze.