Rhukashim
Surrounded by fortifications with the remnants of banners hanging from it. The banners are dark greens, blacks and gold, and have trees and 'hidden sun' flowers. The tree design is the star hung tree of Setanine.
The fortifications seems to be designed to defend from the rift and therefore the surface. The stone door through the fortification has flowers and settings for precious stones in the shape of insects (sadly looted) and leads into a barracks. Inside are mess halls, bedrooms. The place is filled with dozens of mummified goblin corpses. Their positions suggest an unexpected death, slumping in the positions they were sat all the same time. They appear to be armoured like soldiers. The corpses have a big hole in their skull with scrapings around the hole. Brains are missing!
Goblin writings in the mess hall identify the city as Rhukashim. The name means "The Flower that Blossoms beneath ground". The Goblins were expecting a specific threat from above, hence the fortifications
On a map discovered of the town is a gateway/archway that leads to somewhere called Kalindra. There might be a lake/body of water near this arch.
The door out of the barracks into the city is smashed open from the city site into the barracks.
Beyond the door is some dim light from phosphorescent fungus.
The city is largely circular with a tower in the middle and a larger building illuminated by fungus. There is a town square. There metal growths there and gold construct bugs. The buildings have the metal growths over the city, like cobwebs. The metal is greyish blue with goldish threads.
The city is built of concentric rings of terraced houses with alleys between them. There are posts around the roads with glowing fungus on the top which work like street lights.
Towards the middle of the city is a large open area which seems like a sort of park or similar, filled with lots of fungus. It appears to have a large 8ft goblin statue in the centre.
In the middle of the city is a large 200ft stepped tower which acts as a sort of meeting point for the city: Rhukashim Tower. In front of it is a large stone building with a portico outside with stone pillars. This is the Rhukashim Library. Carved into the walls are religious symbols of a crooked staff with an eye. (Ioun)
Rhukashim was identified by the Hollow bone as a forge, a place of manufacture by the Builders. Beneath the city of Rhukashim, and possibly directly beneath the library and tower lies the Rhukashim Forge