The first Etruscan pyramid was discovered somewhere north of the city of Orvieto, Italy. so around 3 years ago was this magnificent structure spotted buried deep underground.
The reason its considered to be a mimic of an Etruscan pyramid, its their signature design, where the stairs are carved inside of the pyramid.
In order to get inside the pyramid, the researches must dig through multiple tunnels first. And after doing so the team stumbled across a massive system of canals, tunnels and caves, something way bigger than what they were expecting.
Claudio Bizarri, the co-director of PAAO along with his colleagues claimed they already knew about this pyramid around 3 years ago, but would never guess it would be so massive and fascinating.