Nome King's Tunnel

A large tunnel dug by Roquat's Nomes under the Deadly Desert from his underground kingdom to the Emerald City. The purpose of this tunnel was to provide a safe passage for the armies of Nomes, Whimsies, Growleywogs, and Phanfasms to attack and destroy the Emerald City. After defeating this terrible horde, Ozma used the Magic Belt to fill the tunnel back in.