I went to the Grand Canyon some years back. No problem. Planes? No problem. But poise me at the raw edge of a cliff or at the end of a high board and I’m not a happy camper
I hung my head off the top of half dome. Had crawl on my hands and knees from about 10’ then belly crawl the last 3’.
It was one of those “I’m just a tiny speck in the universe” type moments.