Mount Thoi Loi is the largest prominent crater on Ly Son Island
The Mount in the sunset
A 10-million-year-old sedimentary rock islet. 
Stunning flowers on the island
Ancient Duc pagoda in Gieng Tien Mount
Volcano tectonic activity created the unique Hang Pagoda on the coast of Ly Son Island. 

According to Prof. Nguyen Hoang from the Japan National Science and Technology Institute, the volcanic eruption on the island of Ly Son varied, from the deep to shallow sea and on land. This can be considered a "natural museum of volcanic activity" that is very rare in the world.

Cliff Dun, a relic of volcanic activity in An Binh commune, Ly Son island district.
Volcanic eruptions that occurred millions of years ago created cliffs stretching for kilometres on the island of Ly Son 
Other sedimentary cliffs in Binh Chau commune's coastal area
Domestic and foreign experts have conducted a survey in the spectacular Ban Than cliff  
Breath-taking landscapes in Ganh Yen sedimentary rock islet