A brick tunnel is used for the scenes on the battlements.

Traces of the brick tunnel and an old gatehouse are visible along the path.

Machinery is to be installed where the 12-foot-diameter brick tunnel meets the head of the canal, near Douglass Street.

What he found was a black expanse of dripping brick tunnel, silent and cold as a tomb, just as he'd left it.

After a long descent, the steps leveled out, broadening into an old brick tunnel with Gothic arches.

Our voices had a flat, echoey quality in the brick tunnel.

Gray water ran, shallow but fast, along the bottom of the brick tunnel.

Owen followed her, and found himself in a system of smaller brick tunnels, barely six feet in diameter.

Here you will also find the entrance to the Casemates, a system of vaulted brick tunnels beneath the ramparts.

Follow the fort's self-guided tour through brick tunnels, buildings and bastions.