The Similan Islands - Boulder City
Boulder City lies some 200 meter south of Koh Payan. The dive site is completely submerged with two mooring buoys to mark the location, one at the north end and one at the south. Descending down the north line takes you to 20 meters and the south line to 30 meters.
This is a dive in the 20 to 30 meter range with large granite boulders some bigger than a house, swim-throughs and the chance of swimming with large pelagics . Eagle and manta rays cruise around the large boulders while blue spotted fan tail rays rest in the sandy bottom.
With a family of large humphead parrot fish and napoleon wrasse living in the area and the beautiful soft corals and large gorgonian sea fans make this an eye opening dive site with the occasional whale shark cruising past.
