Descending plane partitions and rhombus tilings of a hexagon with a triangular hole

It is shown that the descending plane partitions of Andrews can be geometrically realized as cyclically symmetric rhombus tilings of a certain hexagon from which a centrally located equilateral triangle of side length 2 has been removed. Thus, the lattice structure for descending plane partitions, as introduced by Mills, Robbins and Rumsey, allows for an elegant visualization.