Uploader comment: Never took anything unusual prior to my trip to Gettysburg this past September 18, 2006. When I transferred the images to my pc from my Nikon Coolpix, I noticed a perfectly round white object hovering above one of the boulders in Devil's Den. I do not have PhotoShop or any other photo manipulation program. It has not been edited or retouched in anyway. What do you think it is? Appreciate your input.