“Free Solo” was released on Dec. 13, 2018, to major acclaim for its look at Alex Honnold, perhaps the world’s most recognizable free solo climber.

Alex Honnold just successfully Taipei 101, a 1,667-foot skyscraper, all by himself with no ropes or assists—and it was broadcast live on Netflix.

“Actually, if you put it in the context of mainstream sports, it’s an embarrassingly small amount,” Honnold, 40, joked in a story with The New York Times, published Friday, January 22.