Ghost Tree is a famed big wave surfing location off the 18th hole of Pebble Beach Golf Links in Pebble Beach, California. The wave breaks off the rock-strewn shoreline known as Pescadero Point. On rare winter days with the proper westerly angle, waves are focused by the deep Carmel Canyon to rear up as much as 60 ft (18 m) in height. Formerly known as Pesky's, Ghost Tree is considered one of the most dangerous waves in the world due to its slab shape, massive boils, strong current, bull kelp, and the underwater labyrinth of natural rock pillars in the impact zone. It is also frequented by white sharks.