Evidence of water

Ron Greeley video
Ron Greeley audio

Many of the rocks in the far field of view have a distinctly rounded appearance. Now the only reasonable way that these rocks could have become rounded is if they were carried along by water over a long distance, in effect, stream-washed boulders. This is the first time we've seen these kind of boulders; we didn't see them at Viking. This is a very exciting discovery here at the Ares-Tiu landing site.