I'm a rock climber in an area with a lot of caves and there's a lot of overlap in the rock climbing and caving communities.

I've done some pretty bold climbing, and I've also done some climbing in some squeeze chimneys that would trigger a lot of people's claustrophobia. Heights can be a bit scary because there is objective danger, but tight spaces don't really bother me.

But the idea of something going wrong and having no way to call for backup absolutely terrifies me. It's why I have no interest in caving despite having been invited many times.