Political map of Australia, New Zealand & the Southwest Pacific 7 May 1815 (Settling the Australian interior): Until the 1810s all British attempts to penetrate the interior of Australia by crossing the Blue Mountains which surrounded Sydney (Blue Mountains, New South Wales) failed, severely limiting available farmland in New South Wales (Colony of New South Wales) and forcing the young colony to rely on food imports. In 1813 a route was finally found across the mountains (1813 crossing of the Blue Mountains), allowing for the establishment of Bathurst—the first inland town in Australia—two years later (Bathurst, New South Wales). With the opening up of the interior, the settler population began expanding rapidly, much to the detriment of the Aboriginal inhabitants of the continent (Australian frontier wars).