January
14.3°C ~ 58°F
12 days of rain
Crowds: Busy
Bac Son Valley
A basin of fields and villages ringed by limestone peaks, best viewed from Na Lay hill.
- Location
- Lang Son
- Time needed
- From 2 hours
- Entry fee
- No entrance fee found in…
- Best months
- Oct – Nov
Overview
Bac Son is a valley surrounded by limestone mountains, with fields and small villages in the middle. A viewpoint on Na Lay hill shows the patchwork from above, and it looks its best in late summer, when the rice turns gold around September.
It is a good day trip from Lang Son or a stop between Hanoi and Cao Bang. Allow 2 to 4 hours for the viewpoint and a walk through a village.
Highlights
- See the valley from Na Lay viewpoint
- Walk through the villages
- Visit in September for the golden rice
- Photograph the limestone peaks around the valley
Visitor information
| Opening hours | Daytime |
|---|---|
| Entry fee | No entrance fee found in guides checked for 2025 – 2026. Ask locally about viewpoints and guides. |
| Time needed | 2 – 4 hours |
| Best time of day | Morning |
| Good for | Photographers, road trippers |
| Accessibility | Winding road and steps to the viewpoint |
| Facilities | Small cafes, homestays |
Prices and hours can change. Check the official source before you go.
Best time to visit
Weather in Lang Son by month.
February
15.4°C ~ 60°F
11 days of rain
Crowds: Busy
March
19.4°C ~ 67°F
13 days of rain
Crowds: Moderate
April
22.7°C ~ 73°F
13 days of rain
Crowds: Moderate
May
25.2°C ~ 77°F
20 days of rain
Crowds: Quiet
June
27.1°C ~ 81°F
22 days of rain
Crowds: Quiet
July
27.2°C ~ 81°F
22 days of rain
Crowds: Quiet
August
26.4°C ~ 80°F
25 days of rain
Crowds: Quiet
September
25.5°C ~ 78°F
19 days of rain
Crowds: Moderate
October
22.2°C ~ 72°F
12 days of rain
Crowds: Moderate
November
19.2°C ~ 67°F
8 days of rain
Crowds: Quiet
December
14.9°C ~ 59°F
7 days of rain
Crowds: Quiet
How to get there
- From Lang Son centre
About 60 km from Lang Son city. Most visitors drive.
- Bac Son Valley
Tips before you go
- Go in the morning or late afternoon
- Visit around September for the golden rice
- Wear shoes with grip for the viewpoint steps
- Bring water and sun protection
Location
Bac Son district
More attractions in Lang Son
FAQs
When is Bac Son at its best?
Around September, when the rice is golden.
How long do I need?
About 2 – 4 hours.
Is it far from Lang Son?
About 60 km.