The ledgend of Ha Long Bay

When the Vietnamese settled in Vietnam, they found it difficult to hold off attacks from other countries. They were not strong enough. So the people asked the Drangon family for their help and protection. When the Drangon family decended to the earth they fired from their mouths diamonds and pearls. This caused the attacking countries to retreat. As the diamonds and pearls hit the ocean they became these great rock formations that are now the krasts. Thses Krasts still protect the mainland from attack. It's also said that the beaches were made from the happy splashes of the mother dragon's tail.