South African Boer “pioneers” who trekked away from Cape Colony and civilization to settle deep inland on the South African frontier.
By the beginning of the eighteenth century thousands of trekboers were living permanently on grazing farms in the interior, some of them temporarily migrating each winter to the coast, so that their cattle might enjoy its sweet grass, but generally moving farther into the plains when their land was exhausted or when their journeys of exploration had revealed more attractive grazing or water. These people rarely put up permanent dwelling places; their homes were the wagons parked by a water point on the `loan places' they had registered with the Company. Their farms usually approximated to the conveniently-managed size (for Africa) of 6,000 acres, and they generally marked out this area in a rough and ready manner by trotting a horse from the wagon along all four points of the compass for half an hour.
by Great Trek June 24, 2011