I have carefully examined Mars Rover pictures for years.  Below are the results of that effort.

 

 

 

The pictures below were taken on Mars by NASA Rovers.

 

 

 

 

 

The picture was of a cliff wall that had dark spots looking like caves.  This is an enormous blowup of one of those dark spots.  It shows the inside of a Martian Cave.  It required fill light and vibrancy (color intensification).  Note:  I checked many possible caves before I found this one.  Most just showed boulders.

 

https://youtu.be/x8n7XJ4Cgow

 

https://youtu.be/x8n7XJ4Cgow

 

 

https://youtu.be/x8n7XJ4Cgow

 

     Yes, there is life on Mars!