LOTRO Vault has posted a map of Goblin Town. From the Slave Pens to Gollum's Cave, they've got it all covered. If this is all new to you, you might want to also check out LOTRO Vault's directory of Book 11 screenshots of High Pass and Goblin Town too. Gorgeous.
The Book updates keep chipping away farther and farther into the eastern parts of Eriador. Could Moria be next? We hope so. We wants it!