Countless stories, myths, and legends are told about underground cities and subterranean civilizations spread through a vast network of interconnected tunnels across the planet.
There are many rumors surrounding these underground portals, We have only to remember the mysterious stories that revolve around the tunnels and galleries of the Cueva de los Tayos in Ecuador, or stories about entrances to underground worlds, supposedly located in the Andes, the Hymalayas, the Gobi Desert, Turkey, and even below the Sphinx of Giza.
