Preliminary archaeological studies in St George's Square, Valletta have uncovered an undocumented network of underground passageways, which could possibly connect to the Palace... The passageways were discovered on Tuesday when government employees from the Works Division under architect Claude Borg dug through a wall in a small room on Archbishop Street. After clearing debris and other material, they discovered that the passageway leads to under the Main Guard portico, parallel to the Palace... Further excavation works revealed that the central passageway had a number of corridors that led to other directions. One such corridor, at right angles with the central...