Underground City And Pyramid Discovered At Tiahuanaco, Bolivia | Galapagos | Scoop.it
Mysterious ancient underground cities, strange structures and vast tunnels are examples of what archaeologists can encounter when exploring the secrets of the subterranean world. This is exactly what happened in Bolivia when scientists discovered a previously unknown ancient underground city beneath the famous and magnificent site we know as Tiahuanaco, also known as Tiwanaku.