What Is Sony Teasing?

Sony Norway's Facebook page features a mysterious old picture of a Norwegian explorer. What could it be pointing to?

The man in the picture is Norwegian explorer Fridtjof Nansen, who went to the North Pole and traversed Greenland. The word across his face means "unexplored" in Norwegian.

This has lead to speculation that the image may be a tease for something related to the Uncharted franchise – especially after Sony Denmark posted a similar campaign leading up to Uncharted 3.

[via CVG]