Was This Mars?
I believe it was Yes, before some event changed the surface and atmosphere.
http://www.space.com/scienceastronomy/solarsystem/ancient_mars_020104.html
Ancient Mars: Renderings Show Raging Floods, Vast Oceans
I believe it was Yes, before some event changed the surface and atmosphere.
http://www.space.com/scienceastronomy/solarsystem/ancient_mars_020104.html
Ancient Mars: Renderings Show Raging Floods, Vast Oceans