"What about that shadowy place?"
"Those are just some quilboar. Ignore them, they're jerks."
Back in 2005, my Human Paladin was disconnected while traveling on the boat from Menethil. When I reconnected, I was falling through the earth, like you did back then. I fell for like 20 minutes underneath the world, occasionally seeing trees and mountains and other features. Then, as if in a dream, I was soaring across the sky over a vast green plain dotted with mountains, rivers and the most beautiful scenery imaginable. It was amazing, I'd never seen anything like it in the game. I finally came to rest and then disconnected again. When I reconnected the second time, my body was a little ways out to sea off the coast of Menethil.
For weeks I was convinced I had been transported to some magical secret area. It wasn't until I went exploring outside Theremore that I finally realized the truth of what had happened.
I think about that day all the time and how back then the world was full of such beautiful mystery (and hilarious glitches).