https://dysonlogos.blog/2023/02/20/deeper-underground-a-secret-dungeon-level/

Tower Locations

(Upper left Counterclockwise)

• Decrepit cellar, former old storeroom
• Murdered cultists, looted storeroom
• Preparation room
• Central underground chamber of worship – mound of dead melted bodies. Signs of battle. Some of the bodies seemed to live far longer than they should have.
• Fetid oily water runoff from the bodies.
• Shattered megaliths
• High priest’s chamber
• High priest’s audience chamber
• Uncovered Archway to Marrow
• Well of Marrow
• Sacrificial prison cells
• Ettercap lair

Inhabitants

• 6 ettercaps affix thin lines of webbing across a passage
  • Binkin and Bobbin, twin halflings, tumble into the room
  • Sharp stalactites fall with even the slightest vibration
• Swarm of spiders hanging up in the upper floors.