Abstract: A border fence system is taught having at least a first and a second substantially U-shaped element, each formed from an elongated bar and having an axis of substantial symmetry, the U-shape defining an upper curved portion ending in opposite legs extending in a first direction, each element further having a single passage through the bar positioned in the curved upper portion, offset to one side of the axis of symmetry, and facing in the first direction. The fence system is characterized in that the first element is seated with both legs inserted in a ground material, the second element is seated in the same manner but with one leg inserted through the single passage of the first element, and any further element is seated with one leg inserted through the passage of an immediately preceding element. In a preferred embodiment he extended legs of individual ones of the elements are of different length and tapered at the free ends to facilitate insertion into ground.