Relics of the Luong Ky citadel dating back to the early 15th century Mac dynasty have been discovered in Hoanh Bo district of northern Quang Ninh province.

Lying more than 500m above sea level on the Da Bia mountain in Thong Nhat commune, the surface of the stone citadel remains unchanged.

Director of the Quang Ninh Museum Tran Trong Ha said based on historical records and broken ceramics found at the foot of the citadel, the Luong Ky citadel is much older than the Xich Tho citadel which was also unearthed in Thong Nhat commune. It is related to the struggles against China’s Ming invaders led by General Le Nga in the early 15th century. It comprised two circles of walls with a perimeter of around one kilometre, serving as an ideal place for defence and withdrawal. The entire area of Cua Luc next to Ha Long Bay can be observed from the citadel, Ha said.-VNA