Lean'n'mean
I'll Lock Up
- Messages
- 4,079
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- Cloud-cuckoo-land
They've been busy.As seen from the HiRise camera on the Mars reconnaisance orbiter in 2013.
Similar things can be seen in the Sahara. Known as Barchan dunes.
![Mars-dunes-formation-bw-1024x862.jpg](http://blogs.discovermagazine.com/imageo/files/2014/02/Mars-dunes-formation-bw-1024x862.jpg)
Similar things can be seen in the Sahara. Known as Barchan dunes.
![13-51-Worman-lg.jpg](http://blogs.discovermagazine.com/imageo/files/2014/02/13-51-Worman-lg.jpg)