The UFO Casebook is releasing updated videos of some of the most well-known cases. We have found so many that we will post 1-2 per week. One morning in January 1981, Mexican photographer Carlos Diaz pulled into a deserted car park at Ajusco Park near Mexico City. He was on an assignment for a magazine, and had arranged to meet a journalist who was yet to arrive. Diaz sat in his car, preparing his camera for the job ahead. Although it was early in the morning, the air was thick with humidity which made even sitting still uncomfortable. Impatiently, Diaz began to look at his watch. Suddenly, his attention was caught by a strange yellow glow coming from the valley below him. At first he thought it was a forest fire, but, an instant later, the source of light revealed itself to be a large, orange, oval-shaped UFO, slowly hovering about 30 metres from his car. Unable to believe his eyes, Diaz quickly grabbed his camera. With it resting on his steering wheel, he began frantically firing off shots. Then, w
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