Legendary skydiver and BASE jumper Alexander Polli has died in the French Alps during a wingsuit jump.
The Italian-Norwegian national crashed headfirst into a tree shortly after 11am on Monday while jumping in the Couloir Ensa near Chamonix, mountain rescue officials said.
His diving team immediately alerted emergency services but he died at the scene, NBC reported.
The 31-year-old captivated millions on YouTube performing cinematic stunts including gliding through a 'Batman Cave' in the Spanish mountains at 155mph after jumping out of a helicopter.
The World Wingsuit League said Polli's death was a "huge loss" for the community, adding his legacy "continues to inspire new generations of jumpers for years to come."
Although famed for his death-defying stunts, Polli said in a 2013 interview with the Deutshe Welle newspaper: "To be quite honest: I'm extremely scared of dying."
He said that he prepared for each jump adding: "I never went out there to risk my life."