Personally I’d say cave diving. I was contemplating between that and free climbing soloing but I honestly rather fall to my death than drown in a claustrophobic, dark, cold, silted up cave.
Extreme Cave diving.
Edd Sorenson has some fantastic cave rescue / body recovery stories incase anyone’s interested. The dude is an absolute legend in the cave diving circles.
Knife Monopoly
Three years ago, I broke my leg free climbing. It took two and a half years of physical therapy to get back to maybe 80% of what it used to be, and now I have a permanent metal plate. I was lucky it wasn’t any worse.
I don’t think I’ll ever free climb again, it’s just not worth it. However, I also would never do cave diving.
slope skiiing
I can’t tell if you’re trying to say Alpine skiing is scary or that you’re into all the stuff people consider to be extreme sports.
I would gladly skydive; but strapping some dead trees to my feet and hurtling myself at high speed towards a bunch of live trees, as though taunting them, seems like a bad idea.
Wrecking ball duelling. But I’d pay to see others do it with each their own tower crane.
