What would an ancient alien base look like on Mars? Well this photo from the NASA website clears up that question. I found an alien base at the bottom of the photo. The thing that really stands out is the square structure with a tunnel connecting a pyramid area. What this tells me is that the aliens that created it did not just roam around the planet freely but instead used the tunnels to stay safe.
Please take a look below at the amazing work of Author and researcher Stephen Quayle