January
14.3°C ~ 58°F
12 days of rain
Crowds: Busy
Nhi Thanh Cave
A second cave in the hill with a small underground stream and old inscriptions.
- Location
- Lang Son
- Time needed
- 20 – 30 min
- Entry fee
- 20,000 VND
- Best months
- Oct – Nov
Overview
Nhi Thanh Cave is a short walk from Tam Thanh. It is known for a small underground stream and old inscriptions carved into the walls. It is quieter than Tam Thanh and takes only 20 to 30 minutes.
Together with Tam Thanh and the To Thi rock, it forms the best-known sights in Lang Son.
Highlights
- See the small underground stream
- Read the old inscriptions on the walls
- Combine with Tam Thanh Cave
- See the To Thi rock nearby
Visitor information
| Opening hours | Daily, daytime. No fixed hours found. |
|---|---|
| Entry fee | About 20,000 VND (a travel blog lists 20,000 VND per site for Tam Thanh and Nhi Thanh; confirm at the gate) |
| Time needed | 20 – 30 min |
| Best time of day | Morning |
| Good for | Families, culture lovers |
| Accessibility | Steps and uneven floors |
| Facilities | Toilets nearby |
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
In Lang Son city, a short walk from Tam Thanh Cave.
- Nhi Thanh Cave
Tips before you go
- Wear shoes with grip, because the floor can be wet
- Go in the morning
- Combine it with Tam Thanh in one visit
- Bring a light for dark corners
Location
Lang Son city
More attractions in Lang Son
FAQs
How long do I need?
About 20 – 30 minutes.
Is it near Tam Thanh?
Yes, a short walk away.
What is inside?
A small stream and old inscriptions.