mole run

noun

1. informal.
   usually plural any part of a system of underground tunnels, rooms, etc, prepared for use in the event of nuclear war

Example Sentences

She began by cutting a cube of turf from the roof of the mole run and carefully set it on the ground.

From The Guardian

When Mole got too close, the fox would splash into a stream and wash away his trail, or he would sit in a scented wintergreen patch and watch Mole run right past him.

From Literature