Nguom Ngao Cave in Ban Gioc and Cao Bang

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Nguom Ngao is a large limestone cave only a few kilometres from Ban Gioc waterfall, so most visitors see both on the same day. The name in the local Tay language is often translated as tiger cave. The cave is more than two kilometres long, and about two kilometres of it have lit paths. It is a cool, quiet change from the sun and noise at the falls.

Inside the cave

The cave was formed by underground rivers cutting through limestone over a very long time. Inside you walk through high chambers and narrow passages full of stalactites hanging from the roof and stalagmites rising from the floor. Some formations look like curtains, others like trees, coral or terraced rice fields. Guides and signs point out shapes with names such as the silver tree, the golden tree and the inverted lotus. Coloured lights make the rock glow. A small stream runs through parts of the cave, and you can hear water dripping all around.

The walk

The visitor route is about two kilometres and usually takes one to one and a half hours at an easy pace. The path is paved or concrete for most of the way, with steps and handrails in the steeper parts. Some sections are narrow and wet, so wear shoes with good grip and watch your head where the roof is low. The temperature inside stays cool, about 18 to 25 degrees, which feels pleasant after the heat outside. Do not touch the formations. Oil from hands stops them growing and turns them dark.

Getting to the entrance

The cave entrance is in Ban Gun village, about three to five kilometres from Ban Gioc waterfall on the same road. From the car park, a path crosses rice fields and leads to the foot of the hill, a walk of about ten minutes. This short walk is pretty in itself, with views of the karst peaks and the village. Local guides may be available at the ticket office. They can help you find the best formations and tell you the local stories. Electric carts sometimes run on the path, depending on the season.

Tips for your visit

Visit the cave before or after the waterfall, and plan a full day for both plus the drive. Late morning, when tour groups are at the falls, can be a quieter time in the cave. Bring a light jacket if you feel the cold, and a small torch can help in darker corners. Photography is allowed, but a tripod may be hard to use on the narrow paths. There is a small entry fee, paid at the ticket office. Opening hours can change, so check locally.

Nguom Ngao Cave at a glance

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