The Hải Vân Pass is a mountain pass at an elevation of 496 m (1,627 ft) above the sea level, located in the Annamite Range, in Central Vietnam. Hai Van Pass is one of the most scenic hillside roads in Vietnam.
The road to the summit (The Pass of Ocean Mist), located at the border of Thua Thien-Hue Province and Da Nang City, is asphalted. It’s called National Route 1A and runs between Hoi An and Danang in the south, to Hue in the north. The drive was dangerous due the road's winding route through the pass and the eponymous mists that rise from the sea. It’s said to be one of the most beautiful stretch of pavement in the country.
The twisting road along the pass is very scenic and offers a challenge for drivers. It’s a deserted ribbon of perfection—one of the best coast roads in the world. It’s 19km long, pretty steep, with sections up to 10%. The road winds up and over a fortress of mountains. This rugged pass is the final section of the Truong Son Range stretching to the sea. Whenever one goes through Hai Van Pass, two feelings are experienced: amazement at passing through the clouds and fear when seeing the dangerous bends of the road. After climbing through several hair-pin curves for close to an hour, you reach the crest of the Hai Van Pass.
The dangerous cliffside road was bypassed by the Hải Vân Tunnel in 2005. This is an exquisite winding mountain drive with sharp and blind curves and hairpin switchbacks leading the traveler over the mountains. The drive offers an impressive landscape of verdant mountains and clear blue skies, overlooking Da Nang City, Tien Sa Port, Son Tra Peninsula, and South China Sea.