The Venulan Reach
The Burrows are the largest population centre in the known world. Located in the south of Hew, they are massive pits dug into the bedrock of The Mainland. Nobody from outside The Burrows knows how deep they go.
The Burrows are not one official city, but a massive system of tunnels, pits, and halls in the Hew underground. They generally behave as one group, and all Burrow-dwellers worship Mor-Aroth, the god of the Deep.
Apart from being a great underground city, The Burrows are also the richest mines in The Mainland. The Great Smithies are legendary for the incredible quality of the weapons they produce.