They will be paid 400m to dig the tunnel and the remaining 200m will go toward finishing the design and to pay consultants and other contractors working on the project.

The street was torn up to dig the tunnel below before being rebuilt from above.

Water was poured into the tunnel to put out the fire and an attempt was made to dig a tunnel through the rubble.

Eventually, he ordered his troops to dig a tunnel under the south tower, which they held up with pit props.

The ground under and around the camp was mostly sand, making it easier for the prisoners to dig a tunnel.