Harrigan says:
OOC:
Potentially silly question: does this ruin / dungeon have a name that we've learned?
Right now, to the PCs, it's just an ancient Thothian ruin. See below if learning which module(s) I'm using and how wouldn't ruin the immersion.
[ +- ] Spoiler
The Thothian ruin is "The Caverns of Thracia" by Jennell Jaquays, with some names changed to fit my worldbuilding. I have placed it where the Caves of the Unknown are in Keep on the Borderlands (since they can be anything), which means that the Caves of Chaos are still out there.
P.S. been working on a lore thread for those who wish the worldbuilding was more overt than subtextual. It may only cover what would be common knowledge for (most of) the PCs.