Bliekopolis

History
After the extinction of the blieken, the Bankkrent lived on under the ground. The Bankkrent was lonely and hungry and there was nobody around that was able to feed him, so he began to cry. Streams of tears caused the ground around him to sink, and a massive hole in the ground formed, which was later named “The Sinkhole”. After the Fnakker Wars, the Fnakkers lived underground and fed the Bankkrent mud.

Access Points
You cannot access the Sinkhole by dropping down the actual hole as Denksnavel stops you. You can only access the Sinkhole by going through the Drill Hall in Popocity.