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Trung Trang Cave

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Trung Trang Cave is one of the most remarkable natural attractions within the Cát Bà National Park on Cát Bà Island. This large, cross-mountain cave offers visitors a unique -meter journey through millions of years of geological formation, juxtaposed with a fascinating wartime history.

Introduction to the Natural Marvel

Geological Beauty: The cave runs through a limestone mountain, showcasing a complex and diverse ecosystem of magnificent stalactites and stalagmites. These formations, shaped over millions of years, take on countless unique and often fantastical shapes, giving the interior an ethereal, “fairyland” atmosphere.

The Path: The cave is well-lit and features a wooden walkway, making it easy to traverse. The journey is linear, with an entrance and an exit that is a short walk from the entrance area. The minimal lighting enhances the mystery while ensuring safety.

Ecosystem: The cave is a haven for several species adapted to the dark, including the and various insects and reptiles, highlighting its importance as a local ecological site.

History, Culture, and Legends

Ancient History: Archaeological evidence suggests that the cave was a dwelling place for ancient Vietnamese people as far back as years ago.

Wartime Use (Navy Cave): During the American War (Vietnam War), Trung Trang Cave was not used as a hospital, but rather served as a crucial radio and telecommunication station for the Vietnamese Navy. This strategic wartime use earned it the nickname ‘Navy Cave’. Visitors can still see remnants of the infrastructure, such as meeting rooms and water tanks.

The Legend of Lady Trung Trang: Local folklore links the cave’s name to a heroic female figure, Lady Chua Trung Trang. It is said she summoned the local youth to fight off invaders, and after the victory, she returned to the cave to cultivate spirituality and protect the islanders, leading the local people to name the cave in her honour.

Practical Visitor Information

FeatureDetails
LocationIn Trung Trang Valley, within the Cát Bà National Park area, approx. 15 km northwest of Cát Bà Town.
How to Get ThereLocated directly on the main cross-island road towards Gia Luận Port. Easily accessible by motorbike/scooter rental or taxi from Caˊt Baˋ Town (approx. 20 minutes).
Opening HoursDaily: 8:00 AM−5:00 PM (Hours may vary seasonally).
Entrance FeeAdults: ∼80,000 VND−120,000 VND (The ticket is often a combined entry ticket for both Trung Trang Cave and access to the Caˊt Baˋ National Park trekking trails like Ngu Lam Peak).
Contact InformationAs part of the Caˊt Baˋ National Park, contact information is generally managed by the park authority or local tour operators.

Tips for a Rewarding Visit

Footwear: Wear comfortable, non-slip shoes, as the cave can be damp and surfaces can be uneven.

Temperature: The cave maintains a cooler, more humid temperature than the outside air, offering a pleasant respite on hot days.

Combined Itinerary: Since the entrance fee includes the National Park, many visitors combine the cave exploration with the nearby hike or the ascent to for panoramic island views.

Parking: Paid parking for motorbikes and cars is available near the entrance.

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4.4
Based on 1955 reviews
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trompoly S.
10:15 23 Sep 25
It was a nice hike and walk through the cave. Super humid but it was fun walking through with my friends. We went with Mon Cherie Cruise and they were pretty good with their services.
prajwal K.
13:06 20 Sep 25
If you’ve visited any other cave anywhere else, this can be easily skipped. Felt nothing special or different about this cave. If you’re buying tickets for the catba national park, the ticket usually includes entry for trung Trang caves too totalling to 120K VND per person, but if you’ve visited any other caves, you can omit tickets for the caves and get the tickets for 80K VND instead.
Derek H.
01:45 12 Aug 25
All I can say is Wow! I've been in a few caves around Australia from Tassy to WA, and I have seen nothing like this Cave. Very mystical, surrounded by lush green foliage. I avoided the crowds and used a taxi arranged by my hotel Dung Lai Hotel 173. Spent a good part of 45m-1hr in the cave itself. It has many steps, some sections of path where if you are over 5'11 and not flexible your going to have problems, as there are low ceilings and squeeze points. If claustrophobic I would not recommend.
chu X.
12:28 10 Jul 25
You can buy a ticket from the Cat Ba National Park to also include this cave for 120,000 dong.

The cave is amazing. Pure silence inside, the serene sound of water dripping, beautiful cave formations. Just enough light to paint shadows on the textured walls.

Unfortunately I didn't stay long inside enough to fully admire everything :( but would definitely go again!

And apparently you can park your motorcycle for free near the exit (you will exit a different path the entrance).
kevin L.
13:46 27 Jun 25
Taxi dropped me at Trung Trang cave. Ticket was 120k.
Young guy at ticket office spoke very good English.
He said it takes about 15-20 minutes easy walk.
I walked about 100 metres down path then right up stairs to cave entrance.
Well lit cave with good path inside.
Narrow in one place, turn sideways to get through.
Also some low areas, where you will be squatting down or on your hands and knees, depending on how good your knees are.
Easy walk.
Nice rock formations inside.
At the end you will see some Bats on the ceiling of the cave chilling out. There's two types of Bats in the area.
You then walk the exit path. There's a cafe near end of the path near the road.
Beers and drinks for sale.

My taxi driver was waiting for me there and we continued onto the Hospital cave a few minutes away.

Not a big cave, but a good little walk.
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