PURPOSE: To provide a golf course and a bunker having enough variations inexpensively by changing the constitution (grain size distribution) of the soil grains of sand supplied to a bunker, regarding the improvement of a bunker at a golf course or the like.

CONSTITUTION: Predetermined amounts of sand having different grain size distributions like R1, R2, R4 and so forth, are supplied respectively to a plurality of bunkers laid near the fairway and green of a golf course, and a plurality of zones comprising a single divided bunker, thereby forming a bunker.