Ly Son island covers an area of less than 10 sq.km, but it has nearly 100 relics, most of which are related to the Hoang Sa Flotilla (Photo: VNA)

Every square meter on Ly Son island is imbued with the culture of its ancestors who protected the sea hundreds of years ago (Photo: VNA)

Releasing boat, a ritual at Le khao le the linh Hoang Sa (Feast and Commemoration Festival for Hoang Sa soldiers) (Photo: VNA)

The geological tectonics created original landscapes on Ly Son which are rare anywhere else in the world (Photo: VNA)

To Vo Arch is a 2.5m high rock gate formed by geological tectonics. It is an ideal venue to see sunset and take photos (Photo: VNA)

Gorgeous sedimental cliffs on the way to Hang (Cave) pagoda (Photo: VNA)

Volcanic tectonics created sedimental caves on Ly Son, one of which was Hang pagoda (Photo: VNA)

The white sandy beach on Dao Be (small island) lies by the side of arch cliffs shaped by volcanic sediments (Photo: VNA)

Diving to explore coral (Photo: VNA)

Swimming in the clear blue water of Dao Be (Photo: VNA)