I read an article recently that stated some of the ancient sites like the pyramids in Egypt, Machu Pichu, Stonehenge, etc. share a certain characteristic in that they sit 6,666 KM from other ancient sites and/or the north pole.
I did not verify this claim, but I did perform a cursory search on google earth. Tiwanaku, in Bolivia, was not listed in the article I read, so I conducted a search from there. Using the distance tool, I measured from a point between the two archeological sites there down to areas in Antarctica that measured from 6,500 - 7,000 km from Tiwanaku.
I didn't find much except for the object in the photos. One pic is the screen capture, the other one is where I highlighted the rectangular surface and the sweeping line that follows the contour of the object/ice.
It is quite possibly nothing at all, I just wanted to put it out for anyone that may be interested and that is better with photo enhancement than I am.
ETA coordinates: Lat -73.494920, Long -93.027652
Thank you!