After a narrow crack only allowing one person through at a time, many partitions appear. These chambers are somewhat small and narrow, but very refined, and with many stalagmites and stalactites bearing beautiful forms.

Legend has it, that beautiful young lady named Mây (cloud), caught the eye of the Dragon Prince and he fell in love with her. They were betrothed, and their wedding lasted seven days and seven nights in the very centre of the grotto.

There is in Yên Trung a hamlet of the Muong located on a high hill and composed of three house-on-stilt fashioned after Muong style. Tourists may explore the life of the Muong community through the objects on display such as ovens, pots for cooking wine, mills, rice grinders, hunting tools, beds, blankets and pillow.

Móng Cái Border Gate Market is where economic and trade activities and cultural exchanges between Quảng Ninh and Guang Xi and Vietnam and China take place. It is also the bridge spanning tourist centres of Vietnam and China.

In Vung Duc, you can call on some islands and beauty spots such as Ba Mun National Park

Near the beach is a network of all-conveniences rest houses and restaurants. From the rest houses you can go to the beach on a red brick paved road lined on the two sides by straight rows of coconuts. You can relax by lying on a hammock under the shade of coconut while having a view of the sea or reading books.

You can enjoy yourself to the fullest with the entertainment and recreation services: 400 m artificial beach, bars and bathing services center, emergency station, park, garden of birds and orchids, archery grounds, cactus, sensation train, ghostly house, discotheque, karaoke bar, ...

From Bai Chay, visitors can hire a boat and go out to the bay. It is here that visitors will be find some of Southeast Asias most fascinating sites. Visitors to the bay speak highly of its almost mystical qualities and the surrealistic scenery that defines this bay. The limestone formations are both bizarre and awesome. Over thousands of years the base of many of the formation have corroded to a point where many seem to be balancing on thin air.

Situated within the immense arched mountain range of north-eastern Vietnam, Yen Tu Mountain bears at its peak the Ðong Pagoda: at an altitude of 1,068 m above sea level. The beauty of Yen Tu consists in the majesty of its mountains mingling with the ancient and solemn quietness of its pagodas, shrines and towers.

About 8km away from the Bai Chay Tourist Wharf  Tuan Chau Beach, it is a sandy artificial beach which stretches over 3km. Heading to the holiday resort in Tuan Chau Island Resort. Besides swimming, tourists can enjoy such fascinating extras as sightseeing, entertainment and sports activities, including climbing or camping in the eco-tourism zone.