The UFO hunter argued that no one on Earth would risk flying an aircraft that close to a volcano's mouth, not to mention thatProlific hunter of elusive alien spacecraft Scott C. Waring, who previously reported findings such as the "Mona Lisa of Mars" and an alleged underwater alien base , has come up with yet another bold claim, insisting that he detected "an unknown object flying through the plume of smoke" over the Popocatepetl volcano in Mexico.As Waring explained in his blog ET Data Base,"There are no identifying marks on the craft. Also the second cam in the upper left corner caught nothing at all. It was invisible to that cam!" he wrote. "That sound like the cloaking technology of aliens to me. So I'm calling this a real UFO."Waring also expressed doubt about anyone willing to risk flying an aircraft this close to the volcano's mouth, adding thatThe conspiracy theorist has previously made a number of claims related to various peculiar objects he allegedly found in NASA photos, but the US space agency attributed at least one of his discoveries to the effect of pareidolia - a psychological phenomenon where people see recognisable shapes in clouds, rock formations, or otherwise unrelated objects or data.