St Kilda is an isolated archipelago of 4 miles long that includes the westernmost islands of the Outer Hebrides of Scotland. The largest island is Hirta with the highest cliffs in the UK. The total length of paved road is about 1 mile. The walk along the main ridge has some of the most breathtaking views in Britain. Currently the only residents are the Warden and an Army camp giving a total population well under 50. The other islands Dun, Soay and Boreray are uninhabited and rarely visited by travellers.