11 Year Traverse Map for NASA's Opportunity rover from 2004 to 2015. This map shows the entire path the rover has driven during a decade on Mars and over 3920 Sols, or Martian days, since landing inside Eagle Crater on Jan 24, 2004 to current location just past the Cape Tribulation summit at the western rim of Endeavour Crater heading to Marathon Valley. Opportunity discovered clay minerals at Esperance – indicative of a habitable zone - and is searching for more on the road ahead to Marathon Valley.  Credit: NASA/JPL/Cornell/ASU/Marco Di Lorenzo/Ken Kremer – kenkremer.com