Other sections look like they have collapsed.

This looks like a collapsed pyramid.

These also look collapsed. Compare them to the features below:

http://www.ultor.org/like%20cydonia/m0201545.jpg.htm

http://www.ultor.org/like%20cydonia/m0201545c.jpg.htm

http://www.ultor.org/like%20cydonia/m0400287.jpg.htm

http://www.ultor.org/like%20cydonia/m1900685.jpg.htm

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