Mole men

Mole men ancestors built the underground railways. In time, they grew to prefer the relative warmth and shelter of the tunnels to the world above. They are cannibals. They attack trains for food and carry off women to breed with. They are badly organized but very strong and numerous and not afraid to die.

Mole men attacks occur exclusively in tunnels and will usually cause major losses among slaves and soldiers. Ambushes can be detected and removed with missile-laden line inspection cars.