>> Because the planet’s atmosphere is only about 1% as dense as Earth’s only the smallest dust grains hang in the air.
It should be possible to move a few larger rocks, maybe? Spirit, Opportunity and Curiosity have robotic arms. Good image processing might or might not recognize patterns in the stones.
(Of course, compared to mikeash's answer, this is overengineering and only applicable if their conditions are not met (prearranged meeting point; we have a map and know our location))
It should be possible to move a few larger rocks, maybe? Spirit, Opportunity and Curiosity have robotic arms. Good image processing might or might not recognize patterns in the stones.
(http://nssdc.gsfc.nasa.gov/image/planetary/mars/vikinglander... for an example what most images I saw look like. I imagine it looks like this after a storm: http://nssdc.gsfc.nasa.gov/image/planetary/mars/vikinglander...)
(Of course, compared to mikeash's answer, this is overengineering and only applicable if their conditions are not met (prearranged meeting point; we have a map and know our location))