These gridlike features become more visible in this contrast enhanced and sharpened 3x enlargement from the full resolution TJP-processed Cydonia3 image, from an area below the large tetrahedral or pyramid-shaped mountain. These gridlike features might be city streets, some type of building structures, or perhaps even the bombed-out remains of an ancient metropolis. It is clear that these features are not processing artifacts, or natural formations. This is some of the most compelling evidence for the existance of artificial structures in the Cydonia area of Mars.