1. Where is Bo Hon Island? How to get there?
Bo Hon Island is one of the largest and most picturesque islands in Ha Long Bay, known for its diverse cave systems and stunning landscape. The island lies about 10 kilometers from Ha Long International Cruise Port and around 12 kilometers from Tuan Chau International Harbour.
Covering approximately 3.8 square kilometers, this island features towering limestone peaks rising to 189 meters, sheer cliffs like natural walls, and a dramatic seascape that resembles an epic watercolor painting. It is also the gateway to some of Ha Long Bay’s most iconic caves found along Sightseeing Route 2, including Sung Sot Cave, Luon Cave, Ho Dong Tien, Trinh Nu Cave, and Trong Cave. Once called “Les Surprises” by the French for its stunning harmony and biodiversity, the island hosts diverse flora (banyan trees, cycads, orchids) and fauna (monkeys, deer, mountain goats).
To reach Bo Hon, travelers first need to get to Ha Long City by motorbike, private car, or limousine bus. From there, head to Tuan Chau International Port, where you can purchase tickets and get detailed tour instructions. Bo Hon is part of the standard Route 2 itinerary, which includes stops at Soi Sim Island, Ti Top Island, Sung Sot Cave, and Luon Cave, with the entire journey lasting about 6 hours. Alternatively, you can opt for a Ha Long Bay cruise or rent a private boat to visit without needing separate entrance tickets.
>>> Explore: Map of Ha Long Bay: Guide to a perfect travel itinerary with your beloved
2. When is the best time to visit Bo Hon Island?
The ideal time to explore Bo Hon Island is between September and April, when Ha Long enjoys dry, cool weather and fewer rains, perfect for sightseeing and outdoor activities. From May to August, the region experiences intense heat (up to 39°C) and frequent heavy rain. If visiting during this period, it is advisable to monitor the weather forecast 3-5 days in advance for a smooth travel experience.
>>> More information: Ha Long Bay weather: Best Time to Visit the Natural Wonder of the World
3. Top things to do in Bo Hon Island, Vietnam
3.1. Enjoy an exciting cave expedition
Bo Hon is a paradise for nature lovers and thrill seekers, offering a network of remarkable caves that promise a memorable expedition.
3.1.1. Luon Cave
Luon Cave, a must-visit gem on the island, sits quietly in a serene lagoon encircled by striking limestone formations. Carved through the base of a mountain, it features hanging stalactites that craft a dreamlike ambiance. Inside, you will discover a calm emerald lake bordered by steep cliffs.
Visitors can paddle or kayak through its serene water, admire the lush greenery, spot rare plants, and occasionally encounter playful golden monkeys. Luon Cave is also an important archaeological site tied to the ancient Soi Nhu culture (7,000-18,000 years), with shell and mollusk remains still visible on the cave walls.
3.1.2. Sung Sot Cave
Discovered by the French in 1901, Sung Sot Cave is one of Ha Long Bay’s most awe-inspiring attractions. Ranked among the world’s top 10 most beautiful caves in 2012, it offers a dramatic climb through forested steps leading to a two-chambered wonder. The first, a vast auditorium, has a moon-like ceiling under neon lights. The second reveals a fairytale realm of stalactites resembling banyan trees, Saint Giong, bamboo, dragons, and waterfalls, sparking the imagination.
3.1.3. Trong Cave
Hidden within the Bo Hon island, Trong Cave earned its name (“Drum Cave”) from the sound of wind echoing through its rock crevices, creating drum-like rhythms. This site is also linked to the ancient Soi Nhu culture and is rich in archaeological significance. Inside, visitors can admire untouched stalactites and enjoy a sweeping view of Ha Long’s tranquil seascape from the cave entrance.
3.1.4. Trinh Nu Cave
Trinh Nu Cave, along with Trong Cave, is tied to a touching legend of two lovers from a local fishing village. The cave’s natural beauty and mystical ambiance are enhanced by a unique stalagmite at the entrance resembling a young woman lying sideways, her face turned to the sea, said to be looking toward her beloved in Trong Cave. Visitors are enchanted not only by the scenery but also by the poignant love story told by locals.
3.1.5. Bo Nau Cave
Bo Nau Cave, located roughly 13 kilometers southeast of Tuan Chau Port, is one of the most beautiful Ha Long Bay’s caves, with a rugged and untouched charm that reflects the power of nature. Its arched entrance, accessible only by kayak or bamboo boat, resembles a giant seashell and opens into a chamber filled with elegant stalactites that hang like willow branches, evoking the feel of a grand, natural theater.
3.1.6. Ho Dong Tien Cave
Located on the eastern side of Bo Hon Island, Ho Dong Tien Cave covers an area of around 650 square meters and captivates visitors with pristine karst formations and a serene, crystal-clear lake nestled within. According to local legend, fairies once bathed here in the quiet of the evening, giving the cave its poetic name, “Fairy Lake Cave.” With just a flashlight, visitors can marvel at the glittering white stalactites, some still in the process of forming.
3.2. Experience kayaking & rock climbing
Adventurous travelers can take advantage of Bo Hon Island’s natural terrain with rock climbing and trekking - great ways to enjoy the fresh air and panoramic views. Kayaking in Ha Long Bay is another popular activity, especially among young visitors. Paddling through calm, clear waters, visitors can get up close to limestone caves and fully immerse themselves in the island’s serene beauty.
3.3. Take stunning photos
Bo Hon enchants photography enthusiasts with its breathtaking scenery of dramatic cliffs, crystal-clear waters, and painterly skies. Every corner of the island offers a picture-perfect backdrop for unforgettable travel memories.
>>> Discover: Things to do in Ha Long Bay: Complete your trip with 14 awesome activities
4. Best sightseeing route to explore Bo Hon Island
To explore Bo Hon and its renowned caves, visitors opt for Sightseeing Route 2 in Ha Long Bay. This 6-hour boat tour departs from Tuan Chau International Port and includes stops at: Soi Sim Island - Ti Top Island - Sung Sot Cave - Bo Nau Cave - Luon Cave - Ho Dong Tien Cave - Trong Cave - Trinh Nu Cave - Me Cung Cave.
The ticket price for Route 2 is 250,000 VND per person. In addition, visitors also pay a port fee, boat rental (shared or private), and optional dining services. Meanwhile, day cruises or overnight cruises that stop at attractions on Bo Hon Island typically include all of these costs in their package.
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A trip to Ha Long Bay would not be complete without discovering Bo Hon Island. With its striking limestone formations, mysterious caves, and peaceful atmosphere, it offers an unforgettable blend of natural beauty and adventure. Whether you are kayaking, sightseeing, or simply relaxing, this island promises a memorable experience in one of Vietnam’s most iconic seascapes.
When visiting Ha Long, consider staying at Vinpearl Resort & Spa Ha Long - the first and only resort in Northern Vietnam built entirely over the sea. This stunning retreat boasts three private beaches, a spacious swimming pool, lush green grounds, and a luxurious selection of fully equipped rooms. It promises a truly relaxing getaway with top-tier comfort and privacy.
