Underground Marvels (2019)

S01E09 Conspiracy in the Buried City

Title: Secrets of the Subterranean City Plot: Deep beneath the earth lies a long-lost ancient city, concealed five levels down. To protect its whereabouts from potential threats, the inhabitants created a clever ruse. Experts delve into the mystery and, armed with cutting-edge technology, uncover the fascinating reality of this enigmatic site.