Koh Phanak Boat Trip Phuket. Koh Hong & Koh Phanak are some of the highlights of the picturesque Phang Nga Bay. These two places are draped with dramatic, steep limestone karsts, striking caves, and hidden turquoise lagoons. Both Koh Hong & Koh Phanak are famous for kayaking explorations. Some of the most impressive caves are the Bat Cave, Mangrove Cave, Hong Island Cave and the Climbing Cave.
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