Located in the Long Khanh area of Dong Nai, Hang Gon Ancient Tomb, also known as Hang Gon Megalithic Tomb, is one of Vietnam’s most distinctive prehistoric archaeological monuments. Dating from approximately 150 BC to AD 240, the site offers a glimpse into the burial practices and stone-working skills of ancient communities in southeastern Vietnam. It was discovered in 1927 during road construction and later recognised as a Special National Relic, reflecting its outstanding historical and archaeological value.

The tomb’s most striking feature is its rectangular burial chamber, assembled from six massive granite slabs and surrounded by large stone pillars. The chamber measures approximately 4.2 metres long, 2.7 metres wide and 1.6 metres high, while its heavy stone cover demonstrates the impressive engineering knowledge required to shape and position such enormous materials. Despite decades of archaeological study, questions remain about the people who built the tomb and the methods they used to transport and assemble the stones.

Today, visitors can explore the protected monument and learn about the archaeological discoveries that make it significant to Vietnam’s cultural heritage. The nearby Ong Da shrine also reflects local spiritual traditions associated with the site. Hang Gon Ancient Tomb is particularly appealing to travellers interested in archaeology, ancient civilisations and lesser-known historical landmarks, offering a fascinating complement to Dong Nai’s nature-focused attractions.