Hong Islands is an enchanting archipelago in the Andaman Sea, part of Than Bok Khorani National Park, just 6 km from Krabi's coast. The islands offer hidden lagoons among towering limestone karst cliffs and turquoise crystal-clear water ideal for swimming and snorkeling. The main attraction is Hong Lagoon - a natural lagoon surrounded by vertical cliffs accessible only by kayak or swimming through a narrow opening. The pristine beaches and abundant marine life make it a must-visit destination.