British troops stationed at Rock of Gibraltar.
Title reads: "The Rock".
L/S of the Rock of Gibraltar, pan down to a machine gun post. Various shots of workmen enlarging the rock caverns. Various shots of interior of a machine gun post carved into the Rock. C/U of the blade of a pneumatic drill entering the rock. C/U of the man using the drill.
Exterior. Various shots of gun emplacements on the Rock. C/U of a dynamite charge being placed in a hole in the rock. M/S of workmen leaving a tunnel. Good shot of rock being blasted by the dynamite exploding. Various shots of workmen engaged in enlarging the caverns.
Pan from the Spanish to the British guards on the Spanish frontier at Gibraltar. M/S Spaniards crossing the frontier into Gibraltar. Various shots of British soldiers and sailors swimming and fishing at Catalan Bay. C/U of a guard on the defences. C/U of the barrel of one of the island's heavy guns. C/U of a sentry. M/S of gun emplacement guarded by a sentry looking out to sea.