Two hikers reported observing a large diamond-shaped object hovering silently in the sky over Calvine, Scotland. The encounter was documented in multiple photographs reportedly reviewed by the British Ministry of Defence.
On August 4, 1990, two witnesses hiking near Calvine, Scotland, observed a large, silent, diamond-shaped aerial object hovering at high altitude. They photographed the object multiple times as it remained stationary before accelerating vertically at high speed and disappearing. The images were reportedly passed to a journalist and subsequently reviewed by the UK Ministry of Defence. Although officially never fully released, one image leaked publicly, showing a distinct dark diamond-shaped craft against the sky, making it one of the most significant UFO photographic cases in Europe.
| Date: | 1990-08-04 |
| Location: | Calvine, Perth and Kinross |
| Country: | United Kingdom |
| Category: | Photographic / Military Witness Encounter |
| Credibility: | High / Photographic Evidence (Unreleased Military Archive) |