Metallic Circular object observed over Witch Wells, Arizona.At approximately 1400 on the day of the sighting I was walking my dog on my 40 acres heading towards the top of the hill on my property when I just happened to look towards the cell phone tower located on the Witch Wells campgrounds. This tower as the Crow flies is about 10 miles away so from my point of view makes the tower appear about the height of my middle finger when I have my arm stretched out in front of my line of sight. The tower is right next to the Arizona Highway 191 and approximately halfway between the towns of Sanders and St. Johns.I noticed a silver object that appeared to be circular in shape and giving off of very bright metallic appearance similar to seeing a signal mirror in the Sun. The object from my point of view was perhaps no more than 400 yards South of the tower which from my angle it was right of the tower. It was also sightly lower in elevation than the top of the tower. I was fortunate to get another point of reference when I was a white box truck driving Northbound on Hwy 191. At that point I could easily see that this floating object was in appearance no larger than perhaps the cab of this box truck.I thought perhaps this was an optical illusion involving the Sun but as I shifted my angle in relation to the Sun and this object it remained. I drive the 191 quite often and have done so for over 2 years now and I can tell you that there is no structure of that kind or anything else that would explain this. I quickly moved to even higher ground to get a look but after turning my head for only a second the object had vanished. All I can say is that this object hovered for about 4 minutes in the same spot next to a cell phone tower right next to Arizona Hwy 191 and it was definitely some sort of metallic circular object that was of a decent size and then vanished.