There are several sand dunes in the centre of the course. The tallest of the three is Pow Hill, the next tallest is The Queens Jack, and the third tallest is Cearcevlock Hill. Blind shots from the tee at the short fifth and on the approach to the par-4 17th add considerably to the mystery and charm of the course. The most famous hole is the third, a par 5, dogleg right, of 500 yards, where the fairway simply ends about 300 yards from the tee, as the land descends into a vast, deep bunker, nicknamed the 'Cardinal', about 50 yards across, which is buttressed by railway sleepers. Many championship hopes have died in this bunker. The Pow Burn flanks the hole down its entire right side. The Irish Sea / Firth of Clyde forms the western boundary of the course, flanked by sand dunes. The Royal Troon Golf Club sits immediately to the north of Prestwick's course and nearby Turnberry is down the coast, to the southwest.