Farm. Proposed: https://www.tamriel-rebuilt.org/old_forum/viewtopic.php?t=22894
Replace the exterior with b_09.

Relevant claims:
https://www.tamriel-rebuilt.org/claims/thirr-valley-2-plantation-2
https://www.tamriel-rebuilt.org/claims/thirr-valley-2-plantation-3

Ruined Redoran tower. Only accessible from the top entry.

Essentially empty, with he ground having collapsed long ago. Ruined furniture should be the only thing of worth in here, with spider webs and dead rats the other.

Home of a squatter and their spouse. They spend their day fishing and hunting. House is tilted, so they might rest on hammocks and makeshift furniture.

Thirr Valley 2,-43

Swamp troll den.

Vandirelyon keep

The cult of Arius is outlawed and heavily persecuted in Morrowind. Ostensibly worshiping a god of fire and volcanoes, the cult is considered to be a front for Mehrunes Dagon in his aspect of natural disasters. In popular Imperial culture it became parodied as a cult of inbred islanders.