Boss-Mark discovered within the Great Pyramid points to a very advanced ancient civilization Posted on June 4, 2020 by Alien UFO Sightings NASA Spacecraft Just Dove 75 Metres Above an Asteroid’s Surface, And The Photos Are Epic…Amazing PlacesNASA’s OSIRIS-REx spacecraft is getting ready for its big moment. OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security, Reg… Boss-Mark discovered within the Great Pyramid points to a very advanced ancient civilization