Overview
On 4 August 1990, two hillwalkers near Calvine reported a large, diamond-shaped object hanging in the sky with a military jet nearby. They shot six frames and took them to the Daily Record. The images were routed to the UK Ministry of Defence via RAF press officer Craig Lindsay and never published. In 2022, journalist and academic David Clarke located a surviving 10×8 print in Lindsay’s possession and placed it in Sheffield Hallam University’s archive, reigniting the case. Competing ideas range from a staged model to a secret US aircraft to an unknown craft. The object has not been identified. The Guardian+1