It was all shut up after that and the tunnel wasn't used any more.

The tunnels originally were used to sort heat throughout the building.

Between 1811 and 1840 the tunnel was used on average by 40 boats daily.

The tunnels were used to move guns from one side of the island to the other.

During its first week of operation the tunnel was used by an average 77,320 vehicles each day.

The police found him an hour ago in one of those tunnels used for freight.

The tunnel was used for the purpose of bringing stone from the east side.

"I'm very skeptical that this tunnel will only be used by the people who live there."

The tunnel could have been used to adjust both situations.

At the moment the tunnel is blocked off and used as a shooting range.