Dome shaped object at great distance over mountains near national park in mid-day, clear sky.On Saturday morning November 9th I took my family to the reservoir at Sugar Hollow near White Hall, Virginia just outside of Shenandoah National Park (park was due west of our position). Our position was approximately 78 degrees 44' longitude, 38 degrees 07' latitude. I was using a digital camera to take photos of the kids and scenery and did not notice any object in sky while on site. On Saturday evening I was reviewing images on the computer and noticed a distant object in one scenic shot of mountains due west.The dome-shaped/triangular/??? object appears in only one shot taken at 11:51. The other shots I took were probably spaced 30 seconds to several minutes apart, most of which were in the same general direction as the shot with object. My first thought was debris on the CCD sensor (highly unlikely, sealed housing and all other shots clean) but I do not believe this to be the case. If this is indeed an object and not some kind of digital "noise", I estimate that its position places it somewhere over the National Park or beyond. Obviously, I have no information on possible movements, velocity, etc., however, I think object is slightly blurred, which would indicate very high rate of speed given distance to object and sunny conditions If object is real I probably did not detect it on site because I was taking pictures with CCD camera through low res. LCD viewfinder I have absolutely opinion either way about the existence of UFOs but do feel that there is no reason to suspect other than an earthbound explanation for such events - whether or not such an explanation can be readily obtained in all cases. There is a county airport some distance away and hot air ballons are very popular this time of year in the county. If it were a balloon, however, I would have likely imaged it in one or more photos I took before and after the one that recorded the object. I report this only as an unbiased curiousity that others may find helpful.