Dau Go Cave is one of the most beautiful caves in Halong Bay, located on Dau Go Island, about 6 km from Bai Chay Harbor and just 300 meters from Thien Cung Cave. The cave is known for its ancient and pristine beauty, featuring countless uniquely shaped stalagmites and stalactites.

Situated 27 meters above sea level, the cave entrance is 12 meters wide and 17 meters high, with a vaulted ceiling reaching 25 meters. Inside, the vast space is divided into three chambers. The first chamber receives abundant natural light, illuminating colorful stalactite formations of various shapes and sizes.

Stepping into the second chamber, visitors feel as though they are inside an ancient castle with grand and majestic architecture. The deeper you go, the dimmer the natural light becomes, creating a mysterious and magical atmosphere. At the end of the stone path, the cave opens up into a magnificent space with giant stalactite pillars sparkling under vibrant artificial lights.

Unlike many other caves in the bay, Dau Go Cave is unique for its rich biodiversity. Thanks to its wide entrance, high humidity, and exposure to sunlight, a variety of flora—including moss, ferns, and woody plants—thrives inside, making it a rare ecological gem of Halong Bay.