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Ngang Pass
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The Ngang Pass, locally known as Deo Ngang, is a historic mountain pass in Central Vietnam that traverses the Hoanh Son range. It serves as the natural boundary between Ha Tinh and Quang Binh provinces and historically marked the border between the kingdoms of Dai Viet and Champa. The pass reaches an elevation of approximately 256 meters above sea level and extends for about six kilometers along the coast. At its summit stands Hoanh Son Quan, a monumental brick gate commissioned in 1833 by Emperor Minh Mang to control the strategic north-south route. The pass is deeply embedded in Vietnamese literature, most notably through the classic poem by Ba Huyen Thanh Quan, which captures the serene and melancholic atmosphere of the landscape. While a modern tunnel was completed in 2004 to facilitate rapid transit, the old winding road over the pass remains a popular scenic route for travelers seeking panoramic views of the coastline.
- Location: Vietnam
- Nearby: Thien Cam (26 km)
Best time to visit & climate
The most pleasant time to visit is Jan–Mar.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 20 | 21 | 23 | 26 | 28 | 29 | 29 | 28 | 27 | 26 | 24 | 21 |
| Rain mm | 41 | 26 | 45 | 55 | 124 | 100 | 188 | 233 | 383 | 437 | 135 | 85 |
📋 Practical info
Getting there
Accessible via the National Route 1A that connects Hà Tĩnh and Quảng Bình provinces. Travelers typically stop at designated viewpoints along the winding highway.
Best season
The dry season from February to August is usually the best time to visit, providing clear panoramic views and safer driving conditions on the mountain roads.
Terrain & paths
The landscape consists of a steep, winding mountain pass cutting through lush forested hills, offering dramatic coastal and valley views from the highest points.
What to bring
If planning to hike near the pass, sturdy walking shoes and light rain gear are advisable, as weather can change quickly in this historical mountainous region.
Parking
Small rest stops and viewing areas along the main road typically provide limited parking spots for vehicles and motorbikes to safely pull over and take photos.
Safety
The main hazard involves navigating the busy and sometimes foggy mountain highway; extreme caution is advised for drivers and pedestrians near the roadside.
Time needed
Most visitors stop for about thirty minutes to an hour to take in the historical scenery, take photographs, and rest during their broader coastal journey.
Geography
Facts
- The maximum elevation of the pass is 256 meters above sea level.
- The winding mountain road extends for 6 kilometers.
- The Hoanh Son Quan gate was constructed in 1833 by the Nguyen Dynasty.
- The modern road tunnel beneath the pass is 495 meters long.
- Historically, the pass marked the southern limit of the Dai Viet kingdom.
- The pass was a key site for defensive fortifications throughout history.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
Vehicle
Only stops with (optional):
© OpenStreetMap contributors · OpenRouteService
Sights nearby
Frequently asked questions
Is the Ngang pass dangerous?
It is winding, but safe with caution.
What is special about the Ngang pass?
It gives a spectacular view over the sea.
Are there viewpoints there?
Yes, there are stopping bays for photos.
Is it suitable for beginners?
For experienced drivers it is no problem.
What is the best time of day?
During the day in clear weather is best.
Ngang Pass: where is it located?
Ngang Pass is located in Vietnam.
Ngang Pass: when is the best time to visit?
The most pleasant time to visit is Jan, Mar.
Ngang Pass: why is it worth visiting?
The Ngang Pass, locally known as Deo Ngang, is a historic mountain pass in Central Vietnam that traverses the Hoanh Son range.
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