It was part of Miragul's highway, like the qcat, neriak, and lfay pots.
Guides/GMs used to be able to click them (GM flag bypassed the normal key check). Back on Mith Marr I clicked the one in Neriak and ended up in Lfay so I know where that one went. Not sure about the others. I think qcat and tox were connected though? Have to check the label on the firepot to be sure. They should have the destination's emblem on them I think.
Edit: I think it has the Erudin logo on it, so maybe not so helpful. (attached, sorry night-blind erudite)
However this newsgroup post seems to think qcat led to erudin:
https://groups.google.com/d/msg/alt....c/brdNnkbQAaAJ
TD firepot closeups are here:
http://web.cecs.pdx.edu/~guardian/fire/fire.html