This dive site is situated on the northern side of Similanisland #7 and consists of granite boulders down to 40 meters.

In the deeper section you will find six huge boulders giving the dive site its name. Under and between the rocks you can see Reef Sharks, Leopard Sharks and rays.

There are many different kinds of soft corals between the rocks where you will find nudibranchs and shrimps. Turtles aren't unusual in the more shallow part of the dive site.

There can be a quite strong current at Deep Six. When the current is strong we usually chose another dive site.