Came across this method when trying to get to moonglades no-zone withought a priest friend on to help me, i got stuck in a pit that i couldnt seem to get out of.
The glitch to get under Karazan came to mind so i tried that with my cheap mammoth (the WG one) and stumbled on this way to get where i wanted.
Also i realise this is a exploit, but its a exploit that aids exploration so i put in exploration.
If anyone knows the specifics for getting a priest to Gm Island with arrrdolf's method let me know, dont want to camp my druid out there.
P.S. I understand you have to use slowfall, thunderstorm and levitate. but dont want to spend hundreds of gold figuring out how high i need to go.