<H1> NASA Mars Orbiter Spots Caves on Red Planet! </H1>

January 04, 201

Huge pits or caves pumcture a bright, dusty plain near the 

Martian volcano Ascraeus Mons in an image taken between 

October 1 and November 1 by NASA's 

Mars Reconnaissance Orbiter (MRO).
Caves and other underground structures, including lava 

tubes, and canyon overhangs would be potentially useful for 

manned missions to the Red Planet, providing shielding from both 

the elements and intense radiation that a Mars mission would expose 

astronauts to. They might also offer access to minerals, gases, ices, and any 

subterranean life that the crew of such a mission would probably be searching for.
Released in December, the image is among a series of new views snapped by
MRO's HiRISE camera that show intriguing geological features on Mars.
Each image covers a strip of Martian ground 3.7 miles (6 kilometers) wide
and can reveal a detail about as small as a desk—and so far no sign 

of Star Wars monsters.

Fonte: http://www.dailygalaxy.com/my_weblog/2011/01/nasa-spots-caves-on-red-planet.html