Stonehenge (but not as impressive)?
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by JellyMonster
The image was found by Isobel E. I have spun it round... why? -see http://blog.planetfour.org/2013/01/16/if-it-looks-like-a-ridge-its-a-valley-1st-rule-of-mars/ I sometimes negate them if rotation has little or no effect on seeing the spider channels.
A collection of stones is found on, what looks like a plateau, centre left (you can't miss them). Original image here... APF0001gcg
![Stonehenge] (https://dl.dropbox.com/s/ll7ths3ui0s9p35/R-5143480dea305267e9006167.jpg)
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by p.titchin
not only a 'henge', also a 'ceremonial avenue' towards top right!
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by wassock moderator
They look like spoil heaps
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by JellyMonster
not only a 'henge', also a 'ceremonial avenue' towards top right!
Oh yeah I see it. We need another image to get the full picture.
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by Kitharode moderator
Missile site perhaps? Mars was the god of war after all. Any estimates of size anybody?
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