A crater on Mars reveals a pit underneath (IMAGE)
Caption
A hole in the surface of Mars, spotted by the HiRISE camera, reveals a cave below. Protected from the harsh surface of Mars, such pits are believed to be good candidates to contain Martian life, making them prime targets for possible future spacecraft, robots and even human interplanetary explorers.
Credit
NASA/JPL/University of Arizona
Usage Restrictions
No restrictions.
License
Public Domain