The Tunnels
The tunnels are in an area to the east of the Liverpool Metropolitan Cathedral in a rectangle bordered by Mason Street, Grinfield Street, Smithdown Lane and Paddington. Their full extent is not known and many of them are still blocked by rubble. They vary in size from the "banqueting hall", which is about 70 feet (21 m) long, between 20 feet (6 m) and 25 feet (8 m) wide and 20 feet (6 m) high, while the smaller tunnels are 4 feet (1 m) wide and 6 feet (2 m) high.
Read more about this topic: Williamson Tunnels