Looks like something crash-landed for about a kilometre slide strip. Is this a UFO? A piece or rock? A giant sled? Some even say the object damaged the rock and then slid downhill. Make sure to poke around in Google Earth. This thing is but a few years fresh!
Name: Crash Landed In Antarctica
Lat, Long: -54.6628981,-36.1949871
Location: South Georgia Island, Antarctica