A Hole in Mars

[SS4 Gogeta]

http://antwrp.gsfc.nasa.gov/apod/ap070528.html
http://www.space.com/scienceastronomy/070402_mm_mars_caves.html

I find this similar to these here on Earth, it's weird I just watched a show on these types of caves on the discovery channel earlier today

http://geology.com/zacaton/
http://www.geo.utexas.edu/zacaton/site_description/zacaton/zacaton-air.jpg

 

[Gocool]

Hm..........Geography Something i don't know ))))))