I'm pondering them for roleplaying, whether a Dunmer could safely use them for a mud-bath. =P
http://en.wikipedia.org/wiki/Mudpot
After a bit of googling I found this, but its only of slight help. The mudpots on Vvardenfell are small/shallow, the Dunmer are notoriously heat resistant, but i'm not really sure.
Thoughs, on a generally odd topic?