Tunnel network found under Malta's capital

A series of tunnels, believed to have been constructed by the Knights of Malta, descendants of the Crusader knights, have been discovered beneath the Maltese capital of Valletta. Experts believe that the tunnels were built in the 16th or 17th centuries in defense of the city from Muslim attack.

"A lot of people say there are passages and a whole new city underground," said survey leader Claude Borg of the Valletta Rehabilitation Project. "But where are these underground tunnels? Do they exist? We've now found some of them, at least."