Thien Canh Son Cave in Halong Bay

The stunning and glorious caves are the most outstanding feature of Halong Bay. With thousands of islands and hundreds of limestone caves, Halong Bay is like a natural museum where tourists can learn more about geology and biology. When mentioning the most stunning caves in Halong Bay, tourists will list many well-known caves such as Sung Sot Cave, Dau Go Cave, Trinh Nu Cave and Thien Canh Son Cave. As its name suggests, Thien Canh Son Cave offers tourists with the impressive beauty like a fairy land.

I. Location of Thien Canh Son Cave

Thien Canh Son Cave is in Cong Do Reserve, at the center of Bai Tu Long Bay, about 25 kilometers from Bai Chay Wharf. Its location within the heritage zone ensures strict environmental protection. The cave is home to many plant species, earning it the name “Hang Co” or “Grass Cave.” Later, its beauty inspired the name “Thien Canh Son.”

Bai Tu Long Bay and Halong Bay are two largest biosphere reserves in the Gulf of Tonkin. While Halong Bay contains natural and cultural values that have been formed for millions of years, Bai Tu Long Bay is the largest sea sanctuary in North Vietnam. Coming to Bai Tu Long Bay, tourists should not ignore the area of Cong Do.

The total area of this island is about 23 square kilometers, and it is among the most pristine islands of Halong Bay. Not only does this area have a diverse system of flora and fauna but also includes a large number of impressive caves, and Thien Canh Son Cave is the most outstanding one in this area.

II. History of Thien Canh Son Cave

Thien Canh Son Cave formed over millions of years through limestone erosion and deposition. Water eroded calcium crystals in the limestone, which then combined to create stalagmites and stalactites.

The cave was originally called “Hang Co” because it sits on Hon Co Island. When its tourism potential was recognized, it was renamed to attract visitors. “Thien Canh Son” means “mountain with a view of fairy land,” a fitting name for such a stunning place.

III. Highlights of Thien Canh Son Cave

When thinking of a cave in Halong Bay, you might imagine a semi-arid one, accessible only by boat. Thien Canh Son Cave is different. It sits on a high mountain slope on Cong Do Island. To reach it, visitors must climb over 400 stone steps. The narrow path winds under ancient trees, with green grass growing between the steps. The scene has remained untouched for centuries, inspiring awe in visitors.

Stepping inside, a breathtaking world unfolds. Stalactites and stalagmites exist both the ceiling and floor by millions years of erosion and deposition. The formations vary in size and shape, each unique. Together, they create a dazzling display of colors and textures.

The cave feels like a fairy-tale realm. Stalactites hang like Gothic chandeliers. Some stalagmites resemble flowers and animals, while others look like statues. Their lifelike presence sparks the imagination. It feels as if they hold stories whispered for thousands of years.

Inside, the temperature stays cool, no matter how hot it is outside. Fresh air fills the space, offering relief from the heat. The cave’s peaceful atmosphere washes away stress, allowing visitors to fully admire its beauty.

IV. What to See and Do at Thien Canh Son Cave?

1. Discovering the cave

Thien Canh Son’s beauty has made it a popular destination. Some visitors describe it as a “sleeping princess waiting for her lover.” Soft lighting enhances the cave’s natural charm without overpowering its natural appeal.

Every stalactite and stalagmite holds a story of time. Despite history’s changes, the cave’s beauty remains untouched, allowing visitors to marvel at this natural masterpiece.

2. Admiring the view of Bai Tu Long Bay from above

After exploring the cave, step outside for a panoramic view of Bai Tu Long Bay. From this height, the bay appears even more stunning, with its limestone islands resembling scattered gems on the water.

Around the cave, wild plants thrive despite harsh conditions. Their colorful flowers add to the cave’s charm, symbolizing the resilience of nature.

3. Swimming and Kayaking

At the foot of Thien Canh Son Cave, a small sandy beach invites visitors to swim in clear waters. After a long journey, a dip in the gentle waves offers relaxation and renewal.

For a more adventurous experience, rent a kayak or dinghy to explore Cong Do Island. The area teems with life—colorful fish swim below, monkeys climb cliffs, and orchids bloom on rocky slopes. This isolated island offers an unspoiled glimpse of nature.

V. How to Get to Thien Canh Son Cave?

Thien Canh Son Cave is about 25 kilometers from Bai Chay Ward in Halong City. To visit, take Tour No. 04, which departs from Tuan Chau Wharf. This overnight cruise includes stops at Vung Vieng Fishing Village and Hang Thay.

If planning a trip independently feels overwhelming, consider booking through a travel agency. They handle all arrangements, so you can relax and enjoy the experience.

If you have more time for your vacation, you should consider an overnight trip in Halong Bay, which will allow you to explore more interesting things of Halong Bay when the night falls.

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VI. Extra Tips

• The best time to go on a cruise in Halong Bay is spring and early summer, which lasts from February to June. The weather in Halong Bay at this time is nice enough for you to take part in outdoor activities.
• The tourism season in Halong Bay might be very crowded, so you need to book your tour and hotel in advance.
• Remember to prepare all your necessary belongings, including swimsuit, sunscreen, hat and sunglasses to go to the beach.
• If you hire a kayak to row yourself, you need to follow the safety instructions and wear a life-jacket to ensure your safety.
• Don’t start your journey on a rainy day. The path leading to Thien Canh Son Cave in wet weather conditions can be extremely slippery, so you had better go on a nice day.
• Remember to protect the environment in the area of Thien Canh Son Cave. This area is a natural reserve, so you need to join hands to preserve the living environment of wild species in Cong Do Island.

It is such a pity if you come to Halong Bay without visiting Thien Canh Son Cave. This cave is a present from the mother of nature giving to Bai Tu Long Bay. Known as the opera house of the sea, this is the perfect combination of stalagmites, stalactites and sparkling lights. Should you have a chance to visit Halong Bay, don’t miss a visit to this fairy land.