The Least Cool Zone
From A KoL Wiki
A collection of ramshackle tin buildings squats around a rough-hewn opening in the side of the volcano labeled "Velvet / Gold Mine." It's hard to tell if the tin is corrugated or not because the air is doing that squiggly thing it does when it's really hot. You're guessing it's probably corrugated, though. That would fit the aesthetic it seems like they're going for.
Beleaguered mine workers trudge sadly and sweatily from building to building, and occasionally trudge even more sadly and sweatily into the red-glowing orifice that leads to the mine shaft.
Occurs at The Velvet / Gold Mine.