Deep Dark City

A deep dark city is a generated structure that will spawn in the deep dark biome.

Structure
They are constructed out of deepslate and its variants. The cities are home to sculk and is where you can find all the sculk variants. They are only lit by candles and soul lanterns and are otherwise very dark.

Mobs
Wardens can spawn in deep dark cities if a sculk shrieker is activated too many times.