In this video, we embark on a journey to uncover the forbidden secrets of a mysterious 18 km long underground city found in Iran, dating back 1500 years. With its intricate tunnels, chambers, and unique architectural features, this underground city has remained a puzzle for archaeologists and historians for decades.

Join us as we explore the hidden tunnels and reveal the fascinating engineering feats that have gone into constructing this massive underground labyrinth. We'll also take a closer look at the mysterious artifacts found within the city, which offer clues to a lost civilization and ancient way of life.

As we delve deeper into this underground city, we'll encounter dark legends and stories that have been passed down for generations. From hidden treasures to secret chambers, the secrets of this underground city are waiting to be uncovered.

Don't miss this incredible journey into the unknown as we reveal the forbidden secrets of Iran's 1500-year-old underground city.