Underground tunnels that are 1,600 years old are discovered beneath Hagia Sophia.
Archaeologists have uncovered a network of underground tunnels approximately 1,600 years old beneath the monumental Hagia Sophia in Istanbul during ongoing restoration work.
#HagiaSophia #Istanbul #Archaeology #AncientHistory #ByzantineEmpire #RomanEmpire #CulturalHeritage #HistoricDiscovery #Restoration #Turkey















