1994 December 21. The Carlos Diaz photo gallery is extensive. While taking photos of the eruption of Mt. Popocatepetl in Puebla, Mexico, he shot this photo. It has been authenticated by many photographic experts and published in numerous magazines, newspapers, and books. This picture shows a glowing, yellowish, disc shaped object with a red hue toward the top and windows or portholes. Diaz has taken both still and moving imagery of many UFOs.