Thien Ha Cave is located in Tuong mountain range with an altitude of nearly 200m, part of a solid natural wall surrounding and protecting the southwest of the 10th century capital of Hoa Lu, associated with historical sites, Culture such as Le Nha Boat Wharf, Dau Son Buddha Mountain, Fighting Soldiers Field... From Muong Tho Ha village, Son Ha commune, you get on the boat on a small canal about 1 km long amidst the countryside. The shapes created by mountain rocks are called by names such as: this is the Fox Lo eating prey, that is the Elephant in disguise, the Tiger stalking its prey, the monkey climbing the tree... higher up there is an altar with images of the Buddha and monk Duong Sang eating. chanting prayers to pray for the peace of the disciples... all arouse the curiosity and discovery of visitors.