Collahuasi Mine Disk Photos

In mid-April 2013, a group of approximately 35 professional workers and technicians (specialists in electricity, electronics, and fluid control) at the Collahuasi copper mine, located at 4,300 meters elevation in Chile's northern Tarapacá region, observed an unusual aerial phenomenon for about two hours during daylight under completely clear, cloudless skies. The object appeared as a brilliant, flattened silvery disk estimated at 5–10 meters in diameter. It performed short ascending, descending, and horizontal movements at an altitude of roughly 600 meters above the surface. Witnesses described it sometimes looking like a fixed disk and at other times changing appearance slightly. One worker captured two clear photographs using a Samsung Kenox digital camera. The images were later forwarded to Chile's CEFAA (Committee for the Studies of Anomalous Aerial Phenomena), part of the Directorate General of Civil Aeronautics. After extensive analysis involving meteorological, astronomical, and photographic experts, CEFAA ruled out aircraft, balloons, drones, lens artifacts, and atmospheric phenomena. The official report, released in 2014, classified the event as an unidentified aerial phenomenon (UFO) of significant interest with no conventional explanation.