Hobsonville was an RNZAF seaplane and landplane base. At the bottom of the photo is the arched roofed Sunderland hangar and to its right the Catalina hangar. Both still exist. The two saw-tooth-roofed hangars further to the right also still exist. The hangar above and to the right of them is gone. Wartime steps have been taken to camouflage the base with roads across runways, painted hangars and concealed hardstanding. The seaplane base closed in 1967 when Sunderlands were withdrawn and helicopter operations ended in 2002. Photo from: RNZAF/Air Force Museum of New Zealand