The first time I entered Amdapor I was struck by the beautiful but alien terrain. The giant puff balls, spores filling the air, the insect webs, those weird floaty-spinny things...I wanted to know more, so I checked the lore book. Unfortunately, all that said was that its earth aspect had waned recently, allowing access.
That's not a lot to go on, but I think I have a theory on what's really going on with the fungus of Amdapor.
As alien as the fungus is, I've seen a place a lot like this before: The Poison Jungle, from Nausicaa and the Valley of the Wind. The Poison Jungle is a vast hellish forest of fungi and insects where toxic spores choke the air. It's also, contrary to appearances, not a sign of corruption but of healing. The insects and fungi are gradually cleansing the earth of the nuclear, biological, and chemical fallout of a long-ago war, and eventually will make the world habitable again.
I wonder if something similar isn't going on in Amdapor.
Thoughts on this?