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.
Source:​https://www.ufosightingsdaily.com

An intriguing new scientific paper suggests that there is life on Mars in the form of fungi growing on the surface of the Red Planet. The bold assertion, which sounds similar to arguments made by Martian anomaly hunters in the past, comes courtesy of a peer-reviewed piece in the Journal of Astrobiology and Space Science Reviews.
Source:https://www.coasttocoastam.com​