The World Tree/Mordan Drin

Translated to "Underwater City", Mordan Drin is located under the cave lake of Kolthragh in Undgrin Ankor in Ikhael within the World Tree campaign. Glowing fungus and insects shine through the lake into the glass that illuminates the entire city through the glass ceiling. Several supports hold the glass above, with The Spire being the main support. The tavern "The Idle Hammer" can be found within the old district where they serve the Glowing Terror, a glowing teal drink made from the glowing fungus above.