winnipeg weather 14 day

http://trevorvzxu287.jigsy.com/entries/general/point-the-finger-at-that-lousy-golf-course-sand-trap-bunker-on-scottish--lamb

Sand Traps on golf links-- better called "Bunkers" trigger wonderful problem for many golfers. How is that these devils came about to be the scourge of most common golfers?