BASE jumping trailblazer Alexander Polli died Monday after a wing suit crash in the French Alps, authorities told NBC News.
The 31-year-old dual Italian-Norwegian national crashed into a tree in in the Couloir Ensa near Chamonix, an area popular with BASE jumpers.
"It's a location where there are a lot of accidents," a rescuer with the PGHM mountain rescue unit said.
Video of Polli's earlier "high-speed hole shot" through the opening of "Batman Cave" in Montserrat, Spain, in 2013 has racked up more than 13 million views on YouTube.