It is https://www.facebook.com/JourneytotheSurfaceoftheMARS/
Here an example:
https://www.facebook.com/JourneytotheSurfaceoftheMARS/photos/a.333231393552422.1073741828.333200476888847/679750542233837/?type=3&theater
This link is showing a detail of the image (Courtesy: NASA)
https://mars.jpl.nasa.gov/msl-raw-images/msss/01692/mhli/1692MH0007060010603983C00_DXXX.jpg
Here the "object" we can see in it.
