NASA Says: We don't know.... Mar's Anomaly

[micjer]

I do agree that it looks like both sides have collapsed.  Makes you wonder what has happened to create a landslide from each direction.

Meteor strike, sinkhole.....?  Odd

[rdunk]

Doesn't look that way to me! On what we might call the upper side of the "wall" feature, the ground surface is obviously different when compared to all of the others areas in this photo. It is almost anomalous-looking in comparison, because the ground appears to be so smooth.

Also, directly across from the "wall", there is a continuous "straight-line feature" formation that seems a bit odd in this area of almost "no straight lines!! If this is slide, why this straight-line feature at just the edge of the beginning of this smooth surface??

I do wonder just how tall this "wall" might be - tall enough to be a place for collecting water runoff for someone's benefit??

Probably is an act(s) of Mars nature, but looks a little odd in the photo.

This is the pic and area to which I am referring!

[ArMaP]

This is the pic and area to which I am referring!

OK, I'll have to look for that one.

[ArMaP]

After a long search I was finally able to find that photo, it's photo E1104033.

Knowing the exact place I looked for other photos, and judging by photo D08_030443_1409_XN_39S166W it looks like the bottom of a landslide. The straight line is unusual.

I also found a higher resolution photo from HiRISE, and in this it looks like the "wall" is a dune.
ESP_020685_1410

[biggles]

Reminds me of that film long ago called Dune.