A 6-minute 19-second documentary film by OrbitalFlyers exploring Dumbarton Rock and the kingdom of Alt Clut, which controlled the Clyde long before Glasgow became Scotland’s largest city. Using aerial footage and narration, it considers the Rock’s natural defences, its role as a royal stronghold of the Britons, attacks by Viking forces and the changing centres of power along the Clyde. Published in May 2026; free to watch online.