Bunker Or Hanger Door Found On Mars

A bizarre anomaly has been found on the red planet by the Mars Opportunity rover.

The anomaly which was spotted by a mars researcher appears to show an open hanger door or perhaps an observation station embedded into the rock face near the rim of the Endeavour crater.

Raw File: http://www.jpl.nasa.gov/spaceimages/images/largesize/PIA18094_hires.jpg