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

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Tetrahedral Pyramid and Wall
Latitude 49.24°
Longitude 62.95°
TRAVERSE ACROSS WIDE TROUGH IN TEMPE FOSSAE
NASA Catalog:  http://ida.wr.usgs.gov/html/orb_0491/49105.html

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

MOC Image Viking 
Context
Image		 Viking 
Color 
Context 
Image
Resolution  8.02 m






resolution: unknown

Enhancements

This in an enhancement of the Viking context image.  The exact scale is unknown but is probably between 100 and 200 m/pixel.   That would make the pyramid's base between 4200 and 8400 meters long.  

Greg Stockton's commentary: 
An odd layout.  The left cluster could be  two adjacent pyramids, one larger than the other, with both to the left of a ridge.  There are several fairly straight, parallel lines on the ground leading up to these from the west.  There could be a large, eroded cross-like formation on the ground below the "pyramids." 

To the left of them, between the long parallel lines--is that another rectilinear formation on the ground, with two small buildings beside it? 

Now for the strangest part of this scene.  Look at the shadow cast by the separate, eastern ridge, which is oriented NW/SE.  I ask you what you see.  Now look back at the western ridge, and look at its shadow.  Then look at the "ridge", and the individual parts of the shadow.  It looks like unnatural, elevated objects along the ridgeline.

Both ridges have artificial objects on them.  The respective shadows clearly show it.

We then enhanced the area further.  Below the pyramid and ridge, in the "river valley" that crosses left to right, we see several additional artificial structures.  These could be tanks, an industrial complex, or smaller structures.