Khao Khanab Nam is two limestone hills rising straight out of the river mouth beside Krabi Town, and it is the landmark that appears on the town's signs and souvenirs. From the river bank they look like a pair of steep, jungle-covered towers, and from the water they feel even larger. The hills are riddled with caves, and local archaeologists have found ancient remains and artefacts in them, which makes the site as interesting for its history as for its scenery. The half-day trip we link combines a longtail boat ride through the mangrove channels around the hills with a visit to a cave, and includes lunch. You travel by boat through a maze of mangrove roots and tidal creeks, past fishing platforms and stilt houses, with the chance of seeing monkeys, kingfishers, herons and mudskippers, and then step ashore to walk into the cave with a guide, past stalactites and bat roosts. The route is calm and gentle, with plenty of shade, so it suits visitors who prefer a quieter alternative to the island tours.
The mangrove side
The forests around Krabi are a nursery for fish and crabs and a vital protection for the coast. Boats slow down to pass between the roots, and guides point out wildlife and explain how the trees survive in salt water. Tides matter here, because the channels are wider and the water deeper at high tide, and routes can change with the water level.
Early morning is the best time for bird and monkey sightings, and the light on the hills is soft. The trip is less about big thrills and more about atmosphere.
The caves and the hills
The main cave is entered by a short walk and a few steps, and inside there are limestone formations, shafts of light and bats overhead. Wear shoes with grip, bring a small torch or use your phone light if the guide does not supply one, and watch your head and your footing.
Some caves have narrow or slippery sections. Monkeys around the entrance can be bold, so keep food and bags secured and do not feed them. Remember that this is a place of local importance, so be respectful and follow the guide's instructions.
Practical advice
Wear light clothes, a hat, closed shoes or sturdy sandals and bring repellent, water and a camera. Boats are open and the sun is strong, so apply sunscreen before you board. The trip is flat and gentle, so it suits families and older travellers, though the cave steps can be uneven.
It works well as a half-day activity if you are staying in Krabi Town, where many hotels are close to the river, and it pairs nicely with a visit to the weekend night market or a late lunch in town. If you have the time, combine it with Tiger Cave Temple in the same day.
In the green season, check for rain, since the cave floors can be wet, and listen to your guide's advice about water levels. Ask the operator how long the cave visit lasts and whether helmets or lights are supplied. Bring a small towel, since the mangrove channels can be humid and the cave air feels damp.
If the tide is low, the boat may drop you at a landing point further from the hills, so check the plan with your guide. Fishing villages, crab traps and stilt houses along the river give the trip a lived-in feel that more famous sights lack.
What to expect
The experience
A half-day longtail boat trip from Krabi Town through the mangroves around the Khao Khanab Nam hills, with a guided cave visit and lunch.
Best time
Morning, for cooler weather, softer light and better wildlife; tides affect the route all year.
How long
Four to five hours including pickup and lunch.
Tips
Wear shoes with grip, bring repellent and sunscreen, secure food and bags near monkeys and ask about the tide.
Quick picks
- Best for
- Nature and history lovers who want a calm half day away from the beaches.
- Families
- Easy and gentle for most children; watch the steps and slippery floors in the caves.
- Couples
- A quiet, atmospheric outing with a good lunch, easy to combine with the Krabi Town night market.
- Pair with
- The Tiger Cave Temple, the Krabi Town weekend night market or a cooking class.
- Time needed
- Half a day.
Good questions
What is Khao Khanab Nam?+
It is a pair of limestone hills at the mouth of the Krabi River next to Krabi Town, and a symbol of the town. The hills contain caves where ancient remains have been found.
Will I see wildlife?+
Monkeys, kingfishers, herons and mudskippers are common sights. Early morning gives the best chances.
Is it suitable for children?+
Yes, the boat ride is gentle. Watch the steps and the slippery floors in the caves, and keep food away from monkeys.
Does the tide matter?+
Yes. Water depth changes the routes through the mangroves, so the guide may adjust the programme. Ask when you book.
Is it a good alternative to an island tour?+
Yes, it is calmer, shadier and shorter, and it works in the green season when sea trips are cancelled.
