Boulder City is a dive site for those of you who like to see big fish. The shallowest part of this dive site is 12 meters and there can be a bit of a current. Because of the depth and currents at Boulder City, dive time maybe a little shorter.
The dive site has two mooring lines. The southern line dropping down to the reef at 30 meters, with the northern line being tied off to the reef at 20 meters.
Boulder City is situated off Similan island #3, and is rarely dived. therefore it is not unusual that we get to have this dive site to ourselves.