http://ida.wr.usgs.gov/html/m12007/m1200724b.jpg

http://ida.wr.usgs.gov/fullres/divided/m10023/m1002362d.jpg

A canyon river of dark material?

http://ida.wr.usgs.gov/fullres/divided/m10026/m1002646c.jpg

http://ida.wr.usgs.gov/fullres/divided/m10024/m1002407b.jpg

Stains emanating from the same type of cliff that NASA used as an example of proof of water on Mars.

http://ida.wr.usgs.gov/fullres/divided/m02043/m0204388c.jpg

http://ida.wr.usgs.gov/fullres/divided/m02043/m0204388d.jpg

http://ida.wr.usgs.gov/fullres/divided/m10032/m1003246g.jpg

Dark material in run-off grooves