This dive site, Hin Gra Dueng Pinnacle, is a distinctive rock formation resembling a mortar and pestle, located on the northern side of Koh Rang. It's a pile of rocks that nearly breaks the surface, offering a clear visual reference for navigation despite the often murky water. There isn't significant historical information available for this specific dive site beyond its physical description.
The site is particularly known for its abundant marine life, most notably large schools of yellowfin stingrays. Divers should also be cautious of the many sea urchins present on the rocks, indicating a healthy but spiny ecosystem. Beyond these specific mentions, general reef fish can be observed.
Hin Gra Dueng Pinnacle is suitable for both new and experienced divers due to its shallow maximum depth of 15 meters and an average depth of 7 meters. The best time to visit is typically during Thailand's dry season, from November to April, when overall conditions are generally more stable, though visibility can remain variable. Freedivers will also find the shallow depths accommodating, but all divers should be mindful of sea urchins.
