This image of an area in Southern Sinus Meridiani (Sinus Meridiani is of course home to kksamuria's amazing New Face on Mars at Meridiani, and a great many other anomalies as well). Here is a collection of unindicated strange but somewhat undeteriminable forms, clipped from the source image which contains other possibilities such as the possible pyramids near center on the left border of the original. The right side of this segment is particularly rich in the suggestions of huge enclosures that once contained vast ancient cities, yet such evidence of deliberate structure is all throughout this clip, and particularly striking when we consider the angularity of the dark areas in the image.