For the first twenty-five years of British settlement, the Wiradjuri's land in the central part of New South Wales remained isolated from the settlers due to the intervening barrier of the Blue Mountains. In May 1813 the exploration party of Blaxland, Lawson, and Wentworth found a route across the mountains, essentially by following existing Aboriginal trails. From a peak later named Mount Blaxland, the explorers claimed to have seen "enough grass to support the stock of the colony for thirty years" on the other side of the mountains—the Wiradjuri country.