aka. Hin Ploeng or the Rayong Pinnacles | Rayong
Given its far distance from the shore and environmental influences of the Rayong industrial zone, you can witness a noticeable improvement in visibility, abundance of marine life and health of corals at Hin Alhambra (a.k.a. the Rayong Pinnacles or Hin Ploeng in Thai).
It takes about 1:45 hrs. on the dive boat to reach this twin set of pinnacles that emerge from around 25m of depth to just below 3-5m below the water surface. Truly a treat!