Mysterious 18-Km Long Underground City Found In Iran: Could be At Least 6000 Years Old

For example, during the Mongol invasion in the 13th century, when the invaders arrived at the above-ground city, they found it deserted as its residents had fled to the safety of Nushabad. This pattern continued until the Qajar period.

Nushabad was well equipped to serve as a refuge, with features that made it difficult for attackers to enter. For instance, the city had multiple entry points, but they were so narrow that only one person could go in at a time. This prevented an invading army from using their superior numbers to overpower those hiding in the underground city.

Additionally, there are ventilation shafts that allow air flow in and out of Nushabad, whilst fresh water is provided by the spring. This meant that refugees were able to stay in the underground city for long periods of time. It has also been suggested that there would have been some storage areas for food as well. Various rooms have also been found along the carved-out pathways of the city, and ledges have been dug out to serve as benches / beds for people.

The similarity in construction between the Shahr-e Belqeys underground corridors and Nushabad leads experts to believe that they served the same purpose. Further excavations, pending the approval of the Iranian government, will provide more insight into their architecture and use.

The discovery of the extensive network of underground corridors in Bam village is a significant finding that could shed light on the ancient history of Iran and its cultural heritage. The fact that it was discovered by accident during a routine road construction project makes it even more exciting. It will generate great interest among archaeologists and history buffs for sure.