Visoko

Now, to understand why this particular hill stands out, you need a little bit of geographic context.

Visoko sits in a valley system surrounded by several hills and ridgelands, part of the broader Bosnian highlands.

Rivers cut through this landscape for millions of years, carving valleys, exposing rock layers, shaping the hills into whatever forms erosion happened to leave behind.

humans have lived in this region for a very long time there's evidence of settlement going back to the neolithic period and the area was later home to medieval bosnian towns complete with old fortresses and churches dotting the hillsides so this isn't some untouched wilderness People have been living, farming and building around Visochica for thousands of years.

The story really kicks off in the mid-2000s, with one person looking at that hill and deciding it was not what everyone else thought it was.

Semir Osmanagic is a Bosnian-born entrepreneur and self-styled researcher who had been living in the United States.

Long before Visoko hit the headlines, he was already deeply interested in pyramids, lost civilizations, and alternative takes on human history.

He'd written books about Maya pyramids, about Atlantis-like cultures, about the idea that there were global networks of pyramid builders stretching far back into deep time.

Now we're going to move on a little bit to another area that has underground tunnels connected.

This is the Ravine Tunnel Network in Visoko, Bosnia.

Okay? Herzegovina.

We're talking about the Pyramid Valley in Europe, where you have the Pyramid of the Sun, the Pyramid of Love, the Pyramid of the Dragon, the Temple of the Mother Earth, the Pyramid of the Moon, okay? And we have the KTK tunnel entrance.