Is it normal to hallucinate?
So I'm rappelling down Mount Vesuvius when suddenly I slip, and I start to fall. Just falling, ahh ahh, I'll never forget the terror. When suddenly I realize "Holy shit, haven't I been smoking Peyote for six straight days, and couldn't some of this maybe be in my head?"
And it was. I was totally fine. I've never even been to Mount Vesuvius.