Enhancements copyright (C) Marcia L. Peters, all rights reserved

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Three Buildings including a Tetrahedral Pyramid
Latitude -6.13°
Longitude 208.90°
Sample branched surface near dichotomy boundary in Aeolis
NASA Catalog:  http://ida.wr.usgs.gov/html/fha007/fha00772.html

Click on any image below for a full-resolution jpeg image of the same area

  Viking 
Context
Image		 Viking 
Color 
Context 
Image
 
  resolution:  unknown - ~171m?

Enhancements

This picture from the Viking context image above is particularly interesting when compared with our other tetrahedral pyramid find, because the two shapes are so very similar.  My little sketch in red indicates the approximate size and orientation of the feature highlighted here.

This picture actually contains three distinct structures.  Interestingly, each one has similar cylindrical cut-out on the left side.  

These could be tetrahedral monuments or perhaps arcologies (dwellings housing major population centers).