Hai Phong - Trung Trang Grotto

Trung Trang is the biggest valley of Cat Ba Island that has a dimension of approximately 300 hectares, and is from 10 to 30 meters below the surface of the ocean located 15 kilometers northwest of Cat Ba town.
Its grotto is about 300 meters long that extended through the mountains, and was created by nature for thousands of years. Trung Trang Grotto’s overall interior is similar to a fairyland with many stalactites of various strange forms that are vibrantly sparkling just like a group of precious treasure. There is an imposing range of mountains that will release a high echoing sound once they are tapped on. With the grotto’s capacity, it is enough to hold hundreds of visitors inside at once. Here, tourists will also be able to visit a valuable and natural beauty of Kim Giao forest.