Tablas Island Blue Hole

The Tablas Island Blue Hole is an underwater sinkhole located off northeast Tablas Island below the Gorda Point Lighthouse, a historic lighthouse located about southeast of Manila in Barangay Cawayan, San Agustin, Romblon, Philippines.

Description

It is a vertical chimney about in diameter, and is the only known blue hole in the Philippines. With an entrance in shallow water, it is possible to free-dive into the top part of the hole. The bottom of the hole is at a depth of about 30 meters.