Tien Ong Cave – A Hidden Treasure on Halong Bay Cruise Route No. 3
Imagine stepping into a world where nature and history intertwine, where every corner whispers tales of ancient civilizations. Welcome to Tien Ong Cave, one of the most fascinating stops on Halong Bay Cruise Route No. 3.
This route is a favorite among travelers, especially international visitors, thanks to its mix of adventure and discovery. From kayaking through the serene Ba Ham Lake beneath tidal waters to visiting the picturesque Cua Van fishing village, Route No. 3 offers unforgettable experiences. But the crown jewel of this journey is undoubtedly Tien Ong Cave—a natural wonder that serves as a “living museum” of Halong Bay’s rich history.
Perched on Cai Tai Islet, in the Hang Trai Island area, Tien Ong Cave is just 18 kilometers from Tuan Chau International Tourist Port and 16.5 kilometers from Halong City. The cave’s name, “Tien Ong,” translates to “Fairy Elder,” inspired by a stalagmite inside resembling a wise old man with long hair and a kind face. This mystical formation adds a touch of folklore to the cave’s allure, making it not just a geological marvel but also a cultural treasure.

The Enchanting Beauty of Tien Ong Cave
Tien Ong Cave stands out from other caves in Halong Bay with its wide, inviting entrance—a vaulted arch soaring 13 meters high and facing northwest. Located 5 meters above sea level, the cave opens up to reveal two distinct sections separated by a majestic stalactite column.
The outer section is a time capsule, covered with mollusk sediments—evidence of life from thousands of years ago. As you step deeper into the cave, you’ll discover six chambers adorned with shimmering stalactites that seem to glow in the dim light.
The largest chamber stretches 70 meters in length, 43 meters at its widest point, and rises to a height of 10 meters. Walking through these chambers feels like entering a cathedral of nature, where every stalactite and stalagmite tells a story of time and transformation.

The Archaeological Significance of Tien Ong Cave
Tien Ong Cave is not just a natural wonder; it’s a gateway to the past. Archaeological studies have revealed that the cave was a prehistoric residence of ancient Vietnamese people, dating back 8,000 to 10,000 years during the early Neolithic period.
In 2007, the National Museum of History conducted an extensive excavation at the site, uncovering stone tools, bone implements, and pottery that shed light on the lives of Halong Bay’s earliest inhabitants.
These artifacts reveal a sophisticated understanding of tool-making techniques, from single-face and double-face flaking to grinding and cutting.
The cave also holds evidence of the resourcefulness of its prehistoric residents. They crafted tools not only from stone but also from pebbles, stalactites, and mollusk shells, showcasing their adaptability to their environment.
Large quantities of freshwater mollusk shells found in the cave suggest a cooler, wetter climate during their time, providing abundant food resources.
More importantly, Tien Ong Cave offers a glimpse into the evolution of maritime cultures in Halong Bay, serving as a precursor to later civilizations like Cai Beo and Halong. Standing in the cave, you can almost feel the pulse of history, imagining the lives of those who once called this place home.


A Museum Within a Cave – Tien Ong’s Archaeological Display
In August 2017, the Halong Bay Management Board, in collaboration with the Vietnam Institute of Archaeology and the Quang Ninh Museum, transformed Tien Ong Cave into an extraordinary on-site museum. This innovative project aims to diversify tourism offerings while reducing overcrowding at other popular attractions in Halong Bay.
Today, visitors to Tien Ong Cave can explore hundreds of artifacts displayed within the cave itself. Excavation pits have been preserved and integrated into the exhibition, offering a unique opportunity to see history in its rawest form.
These displays trace the continuous flow of cultures in Halong Bay, from the Soi Nhu culture to Cai Beo and Halong cultures, spanning 18,000 to 3,500 years ago.

Why You Should Visit Tien Ong Cave
Tien Ong Cave is more than just a stop on your Halong Bay itinerary—it’s a journey through time. When you explore its chambers, you’ll be captivated by its natural beauty and inspired by the stories of its ancient inhabitants. You’ll leave with a deeper appreciation for the rich history and vibrant cultures that have shaped Halong Bay over thousands of years.