pro_junior Report This Comment
Date: October 26, 2008 10:25PM

martian volcanoes are concave?

fossil_digger Report This Comment
Date: October 26, 2008 10:31PM

uh............no.

DarkKlown Report This Comment
Date: October 26, 2008 10:33PM

Where's the worms?


[en.wikipedia.org])

pro_junior Report This Comment
Date: October 26, 2008 10:54PM

"Any impact powerful enough to launch a Martian rock into space would leave a crater several kilometers in diameter. These volcanoes in the Tharsis region show craters up to 25 kilometers (15 miles) wide"

well they aint convex...

quasi Report This Comment
Date: October 26, 2008 11:06PM

I think the two large ones are convex and it's an optical illusion that makes them look concave. The smaller craters appear to be concave impact craters

ORLANDO399 Report This Comment
Date: October 27, 2008 03:40AM

Look's like a nipple