View Full Version : Valles Marineris, the Deepest Chasm in the Solar System

2008-Feb-20, 01:50 AM
The photographs coming back from the Martian orbiters sure help you appreciate the very different terrain on the Red Planet. And here's an example of one of the extreme places on Mars: the Valles Marineris the deepest, longest valley in the Solar System. The image was captured by ESA's Mars Express spacecraft and reveals a [...]

More... (http://www.universetoday.com/2008/02/19/valles-marineris-the-deepest-chasm-in-the-solar-system/)

2008-Feb-22, 01:26 AM
I thought a large part of that was a collapsed cave system? I guess that hypothesis has been abandoned?