Very first time I flew. Wick to Kirkwall in a DC3, 1952 or 3, so I was 7/8. Part of a journey from Inverness to Whalsay in Shetland by car, plane and boats. Since it was midsummer, daylight the whole way from 4am to after 11.
The population of Caithness is still about 40k, but of course its heyday was when Dounreay was active.