Introduction to Hai Van Peak: Hai Van Peak has an average altitude of 496 meters and a winding length of 20 kilometers. It is the natural border between Hue City and Da Nang City. The scenery of Haiyun Peak is majestic and full of poetry. The peaks and ridges overlook the sea, and the mountains are surrounded by clouds all year round, so it is called Haiyun Peak. There is Haiyun Pass on the mountain, which is known as "the most powerful pass in the world".