Experts vouch for authenticity of Bosnian Pyramids, that they are NOT natural formations but manmade.
That’s one of the problems in determining what parts of a geological formation are man made and what are not. Just because patio-type stones are arranged at the base of a hill, does that mean that the hill is also man made? Not necessarily. Here’s a YouTube video of a number of experts vouching the authenticity of the Bosnian Pyramids.
However, here is a link to a video Experts say the Bosnian Pyramids are really man made