The Underground Tunnels

Underneath the Necron Empire is a vast tunnel system that connects each of the Necron Isles. Unique to this Island chain alone, it is something the Necronians flaunt; the Entrances are well advertised and easily accessable. If walking is your preferred method of travel, or if you just like dark places, the Tunnels are the place for you. Don't worry, the last tunnel collapse was over a hundred years ago, the chances of another happening are slim. And it's not like monsters patrol the dark corridors of earth and stone...