About Luon Cave
Luon Cave is a water cave on Bo Hon Island in Ha Long Bay, Ha Long City, Quang Ninh Province, Vietnam. Part of the UNESCO World Heritage-listed Ha Long Bay, it features a low arched entrance leading through limestone karst to an enclosed brackish lake. Accessible only by small bamboo boat or kayak, it is notable for its tranquil lagoon, towering cliffs, and pristine natural scenery within the bay's core zone.
Visitors guide
Visitors arrive by sightseeing boat from Tuan Chau or Bai Chay wharf and transfer to a small bamboo boat rowed by a local or a kayak to pass through a low, arched tunnel (about 60m long and 2.5-4m high depending on tide). Inside is a calm, enclosed circular lake surrounded by sheer limestone cliffs and vegetation. Visitors can paddle, observe monkeys, birds and clear water, and enjoy quiet scenery. No walking inside the cave; all exploration is on water.
Key highlights
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Low arched water tunnel leading to an enclosed lagoon
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Enclosed brackish lake surrounded by limestone karst cliffs on Bo Hon Island
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Kayaking and bamboo boat rowing through the cave entrance
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Part of Ha Long Bay UNESCO World Heritage Site core zone
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Calm waters with opportunities to see monkeys, birds and marine life
History of Luon Cave
Located within Ha Long Bay, inscribed as a UNESCO World Heritage Site in 1994 for its outstanding geological and geomorphological value. Luon Cave is a natural karst feature formed over millions of years and preserved as part of the bay's protected core zone.
Route
| By air | Fly to Cat Bi International Airport (Hai Phong) or Noi Bai International Airport (Hanoi), then transfer by road to Ha Long City |
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| By road |