I first heard about Crowley when I was a serious Led Zeppelin fan (Jimmy Page looked to him for inspiration, according to Hammer of the Gods). Knew the Ozzy song, too. So I was aware of Crowley’s occult writings but had no idea about the mountaineering when he was young.

Excellent biography here: https://www.oxforddnb.com/display/10.1093/ref:odnb/978019861...