Stone paintings by artisans Do Van Bi and Nguyen Tung Lam were awarded second prizes by Ha Long Bay Management Board in a souvenir design contest.
No first prizes were awarded in the contest held to mark the 20th anniversary of the natural wonder's recognition as a World Heritage Site by the UNESCO.
The works by Bi and Lam not only portray the typical beauty of Ha Long Bay, they also highlight the development and tourism potential of the northern coastal city in Quang Ninh Province.
Two works by Le Quang Cuong and Nghiem Vinh won third prizes in the contest.
Organisers received about 40 entries from 17 individuals and firms. The award-winning products will be used to make and market souvenirs to tourists.