This site is so named because of many recreational divers getting into trouble here because of the strong down current, at the bottom of the valley depths can reach 100m plus. The fan corals are prolific at from 40m down here as they catch nutrients caused by upwelling of water from the depths, there is an amazing display of giant whip corals rising up from the reef at 55m plus. To the south after crossing another George's gulley you come to Walter's Wall which heads out to the south west covered in huge fan corals. Be careful how far you go here as you could end up with a long swim in blue water completing your deco schedule. Recommended bottom gas Tmx16/24