Corn
Is that really corn field, to us it definitely looks like a field of wheat. No matter what is growing there, the image of a single hand rising above everything and reaching up toward the sky is unsettling, to say the least. Is that the hand of an alien or some type of other creature, perhaps a ghost?
Well, it is most likely just a prank played by someone who took the photograph and wanted to make a creepy post online. The first comment on the photo is of course someone who came to immediately debunk the entire thing. We are happy that real farmers are out there to keep the internet honest.