 Between Jura's northern tip and the island of Scarba lies the Gulf of Corryvreckan, where a whirlpool makes passage dangerous at certain states of the tide.The southern part of the island, from Loch Tarbert southwards, is designated a national scenic area (NSA), one of 40 such areas in Scotland, which are defined so as to identify areas of exceptional scenery and ensure their protection from inappropriate development.The Jura NSA covers 30,317 hectares in total, consisting of 21,072 ha of land, with a further 9245 ha being marine (i.e.