Led by Balli the Rash, the Naugrim established their capital in the caverns of Akhuzdah (Ahule), in the rim of the mountains on the southwestern side of the Great Vale. It was called Tumunamahal after Mahal (Aule) and consisted of a seven-tiered complex built along the lines of Khazad-dûm. Balli's craftsmen quickly realized that the site would serve as a superb delving for a capital. The area was, after all, not only blessed with countless ore-lodes, it was criss-crossed with dozens of subterranean rivers. Balli had little trouble convincing his Lord, King Druin the Younger, to move east from the hills of Burskadekdar and to relocate in the Walled Land. Tumunamahal filled a vast cavern complex, one which could be reached from but two entrances. One was a door in the Tower of Druin the Youn