CHEOW LAN LAKE · KHAO SOK

NAM TALU

CAVE

Adventure Through the Water Cave of Cheow Lan Lake

TOTAL EXPERIENCE TIME
Approx. 4–6 hours
Boat, trek, caving and return

TREKKING DISTANCE
Approx. 2–3 km

45–60 minutes

UNDERGROUND ROUTE

Approx. 600 m

DIFFICULTY LEVEL

Challenging

Good fitness required

Nam Talu Cave

Nam Talu Cave is one of the most adventurous cave routes in the Cheow Lan Lake area of Khao Sok National Park. Unlike a dry sightseeing cave, Nam Talu is an active water cave where part of the route follows a stream flowing through the limestone mountain.

Reaching the cave is part of the experience. The journey begins by longtail boat across Cheow Lan Lake, followed by a jungle walk to the cave entrance. Inside, the route continues through chambers, narrow passages and sections of flowing water before emerging on the other side.

This is an active cave experience rather than a simple cave visit. Conditions inside depend on recent rainfall and water levels, and access is always subject to local safety conditions.

Nam Talu Cave is seasonal.

The cave is normally closed from 1 June to 30 November during the rainy season. Even during the open season, access depends on rainfall, water levels and current National Park conditions.

Always confirm access before planning a trip specifically around Nam Talu Cave.

Nam Talu Cave is one of the most adventurous cave routes in the Cheow Lan Lake area of Khao Sok National Park. Unlike a dry sightseeing cave, Nam Talu is an active water cave where part of the route follows a stream flowing through the limestone mountain.

CAVE TYPE
Active Water Cave

EXPERIENCE
Trekking & Caving

LOCATION
Cheow Lan Lake, Khao Sok

DIFFICULTY
Challenging

INSIDE NAM TALU CAVE

A cave shaped by flowing water

Inside Nam Talu, the route follows the natural stream through a series of limestone chambers and darker passages. The character of the cave changes as you move farther inside, with different ground conditions, water levels and passage widths along the way.

Walking through flowing water inside Nam Talu Cave

Limestone formations inside Nam Talu Cave

Guided caving inside Nam Talu Cave in Khao Sok

FLOWING WATER

Part of the route follows the natural stream running through the cave.

LIMESTONE CHAMBERS

Move through changing chambers, rock passages and natural cave formations.

ACTIVE CAVING

Water depth, footing and passage width vary along the route.

NAM TALU CAVE ROUTE

FROM LAKE TO RAINFOREST, THROUGH THE WATER CAVE

01 — LONGTAIL BOAT

Cross Cheow Lan Lake by longtail boat to the trekking point.

About Nam Talu Cave

Practical information before you go

Nam Talu Cave is located in the Khlong Pae area of Khao Sok National Park, near Ranger Unit 4 on the Cheow Lan Lake side of the park. It is a natural limestone cave formed within the surrounding karst mountains.

The cave extends through the limestone from southeast toward northeast. Water from the limestone headwaters enters the cave and flows through its main passage throughout the year, creating the stream-cave environment for which Nam Talu is known.

The cave is part of a protected National Park area, and entry is managed according to current weather, water and safety conditions.

What to Bring:

Nam Talu is a wet cave route, so choose equipment that can handle water and slippery terrain.

Secure shoes with good grip
Lightweight, quick-dry clothing
Small waterproof bag for valuables
Drinking water
Personal medication if required

Size and Formation

Nam Talu is a large limestone cave with an entrance approximately 30 metres wide. Inside, the main passage varies from around 10 to 30 metres in width, with a principal chamber extending approximately 777.6 metres.

Water flows through the cave throughout the year from limestone headwaters to the northeast. The route changes character as it progresses — from shallow, slower-moving sections near the entrance to deeper water, stronger currents and a waterfall farther inside.

Natural limestone chamber and stream inside Nam Talu Cave

Travellers walking through the dark interior of Nam Talu Cave with headlamps

Getting to Nam Talu Cave

Nam Talu Cave is located near Ranger Unit 4 (Khlong Pae) in Khao Sok National Park.

From Ratchaprapha Pier, the boat journey to the Khlong Pae area takes approximately 1 hour. From there, it is about 15 minutes by boat to the trailhead, followed by a forest hike of roughly 3 km to reach the cave entrance.

The walking route passes through natural forest terrain and may be wet, uneven or slippery depending on recent weather. Suitable footwear is recommended.

Access to Nam Talu Cave is subject to current weather, water levels and National Park safety conditions, and visitors must be accompanied by a guide.

Interior Features

The cave contains numerous stalactites, stalagmites and limestone columns distributed along the route. Their shapes and formations vary from chamber to chamber.

A stream runs through the cave throughout the year. Water depth and current change along the route, from shallower, slower-moving sections to deeper water and stronger flow farther inside. A waterfall is also found toward the far end of the cave.

Large limestone formation inside Nam Talu Cave

Frog resting on a rock inside Nam Talu Cave

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IS NAM TALU CAVE RIGHT FOR YOU?

ACTIVE EXPERIENCE
Forest walking, uneven ground and wet cave passages.

EXPECT TO GET WET
Water is part of the route. Depth varies with current conditions.

CONFIDENT MOVEMENT
Some sections are narrow, rocky or slippery.

SEASONAL ROUTE
Access always depends on National Park and weather conditions.

Nam Talu is better suited to active travellers than visitors looking for an easy cave walk.

SAFETY AT NAM TALU CAVE

Nam Talu is an active water cave where conditions can change rapidly after heavy rainfall. For safety, the cave is seasonally closed during the wet season and may also be closed whenever local conditions are considered unsafe.

Never enter the cave independently or during a closure. Access should only take place when officially permitted and with an experienced local guide. Always follow National Park regulations and your guide's instructions.

Nam Talu Cave is a water cave and should only be entered when conditions are considered safe. Heavy rain can cause water levels inside the cave to rise rapidly

Do not enter during unsafe water conditions.
Follow your local guide at all times.
Expect to get wet inside the cave.
Wear suitable footwear with good grip.

Carry only essential belongings.
Protect phones and cameras from water.
The cave may be closed even when weather at the pier appears fine.

SEASONAL CLOSURE
JUNE–NOVEMBER
Nam Talu Cave is closed during the wet season because of the risk of flash flooding.

WANT TO EXPERIENCE NAM TALU CAVE?

Nam Talu Cave is normally visited as part of a Cheow Lan Lake journey rather than as a stand-alone stop. Our team can help plan the route around the season, current park access and the part of the lake where you are staying.