January
17°C ~ 63°F
8 days of rain
Crowds: Moderate
Ha Long Bay
Sung Sot Cave (Surprise Cave)
The largest and best-known cave in Ha Long Bay, with three chambers of lit stalactites.
- Time needed
- 45 minutes
- Entry fee
- 250,000 VND
- Best months
- Sep – Nov
- Best time
- Morning, before the cruise crowds
Overview
Sung Sot, or Surprise Cave, is on Bo Hon Island and is the largest cave in Ha Long Bay. It has two main chambers, and the inner one is wide and tall, lit in soft colours to show the stalactites and stalagmites.
A short stone stairway leads up to the entrance and then through the cave. The walk takes about 30 to 45 minutes, and it is on almost every Ha Long cruise itinerary, so expect other groups. From the exit there is a wide view over the bay.
Highlights
- Walk through the three chambers of the cave
- See lit stalactites and the shapes named after animals
- Look out over the bay from the exit
- Combine with Ti Top Island on a day trip
Visitor information
| Opening hours | Daily, about 7:30 – 17:00 |
|---|---|
| Entry fee | 250,000 VND per adult for the Sung Sot – Ti Top route ticket (2025) Usually included in the cruise price |
| Time needed | 45 minutes |
| Best time of day | Morning, before the cruise crowds |
| Good for | First-timers, families, photographers |
| Accessibility | About 100 steps up to the cave; flat inside |
| Facilities | Toilets and a small rest area at the pier |
Prices and hours can change. Check the official source before you go.
Best time to visit
Weather in Ha Long Bay by month.
February
17.8°C ~ 64°F
7 days of rain
Crowds: Busy
March
20.9°C ~ 70°F
11 days of rain
Crowds: Busy
April
24°C ~ 75°F
12 days of rain
Crowds: Busy
May
27°C ~ 81°F
19 days of rain
Crowds: Moderate
June
28.9°C ~ 84°F
22 days of rain
Crowds: Quiet
July
28.7°C ~ 84°F
24 days of rain
Crowds: Quiet
August
28.2°C ~ 83°F
26 days of rain
Crowds: Quiet
September
27.5°C ~ 82°F
22 days of rain
Crowds: Quiet
October
25°C ~ 77°F
11 days of rain
Crowds: Moderate
November
22.3°C ~ 72°F
9 days of rain
Crowds: Busy
December
18.1°C ~ 65°F
5 days of rain
Crowds: Busy
How to get there
From Ha Long Bay centre
You reach Sung Sot Cave by boat from Bai Chay or Tuan Chau wharf, as part of a cruise. The cave stop is usually around 30 to 45 minutes after you leave the wharf.
Tips before you go
- Wear shoes with a good grip; the steps are wet
- Go on the earliest slot of your cruise to avoid queues
- Keep a guide close, since the stories behind the shapes are the main point
- Photography is allowed, but go slowly in crowds
Location
Bo Hon Island, Ha Long Bay, Quang Ninh
Inside Ha Long Bay, about 30 minutes by boat from the wharf
More attractions in Ha Long Bay
FAQs
How long do I spend in Sung Sot Cave?
Plan about 45 minutes, including the steps up and the walk through the chambers.
Is there an entry fee?
Entry is usually bundled into the cruise price. A 2025 guide lists the Sung Sot – Ti Top route ticket at 250,000 VND per adult, while some 2024 operators quote up to 290,000 VND, so use the newest figure on your booking.
Is it suitable for children?
Yes. The steps are the only challenge, and the walk inside is flat and well lit.