Cheow Lan Lake & Diamond Cave tour: Boat, cave, swim

Emerald waters, limestone peaks, and a cave full of stalactites in one day

A full-day tour from Khao Sok takes you by longtail boat across Cheow Lan Lake in Khao Sok National Park, stopping at the three limestone peaks of Khao Sam Kloe, exploring Diamond Cave on foot, and swimming or kayaking from Phutawan Rafthouse. The tour runs seven hours with a professional English or Thai-speaking guide, includes lunch, national park entry, and round-trip transfer from your Khao Sok accommodation. A minimum of two participants is required for departure.

Step-by-step itinerary

Cheow Lan Lake and Diamond Cave Adventure

• Drive to Khao Sok National Park
• Cruise by longtail boat on Cheow Lan Lake
• Stop at Khao Sam Kloe peaks for photos
• Explore Diamond Cave via forest trail
• Enjoy Thai lunch at Phutawan Rafthouse
• Swim, kayak, or relax by the lake

The experience

The day starts with a drive into Khao Sok National Park, then you board a longtail boat and glide across the emerald water toward Cheow Sam Kloe: three dramatic limestone peaks that rise straight out of the lake. The boat slows at the peaks so you can photograph them, then continues to Diamond Cave. A forest trail leads you inside, where the cave opens into chambers of stalactites and stalagmites lit by natural light filtering through openings in the rock.

After the cave, the boat takes you to Phutawan Rafthouse, a floating structure on the lake where lunch is served: Thai dishes without pork, plus fresh fruit. From there, you can swim in the lake, paddle a kayak along the jungle-fringed shore, or sit on the platform and watch the limestone cliffs rise around you. The tour allocates time for each activity based on travel between stops. The remaining hours are yours to spend as you choose at the rafthouse.

Your guide speaks English or Thai and travels with the group throughout. You'll wear a life jacket on the boat and have access to shared kayaks if you want them. The tour includes travel insurance, drinking water onboard, national park entry, and transport back to your starting point in Khao Sok. Children from age one are welcome, though infants must sit on an adult's lap during the boat ride.

What’s included

• Round-trip transfer from your Khao Sok accommodation.
• national park entry fee.
• longtail boat across the lake.
• life jacket.
• lunch (Thai, no pork) and fresh fruit.
• shared kayaks.
• drinking water onboard.
• travel insurance.
• professional guide in English or Thai.

Before you book

Days and timesEvery dayDeparts at 09:00

AgesAdult (10 to 70 years) · Child (4 to 9 years) · Infant (1 to 3 years)

Meeting point and pickupHotel pickup is optional; you can also go straight to the meeting point. Ends back at the starting point.You can choose from 17 pickup points.Operator's directions: “Or, you can also get picked up from anywhere in Khao Sok. When you arrive, you will see our easily identifiable meeting point with our welcoming staff.”

Cancellation and refundsFree cancellation up to 24h before the start. After that, no refund.It may be canceled due to bad weather or if the minimum number of travelers isn't reached. If that happens, you're offered another date or a refund.

Prices and times updated 8 days ago

Good to know

Easy physical levelPublic transport nearbyInfants must sit on laps

Operated by Siam Scape Journeys

Is this one for you?This tour works for families with young children, couples, and solo travelers. The boat is the main transport and the rafthouse gives you time to move at your own pace. Groups stay small enough that the guide can manage the boat and the stops without rushing, and the mix of boat time, cave walking, and water activities means no single part dominates the day.

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Top questions

What languages is the guide in?

Live guide in English and Thai.

Can children come?

Yes. Ticket types: Child (4 to 9 years); Infant (1 to 3 years).

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24h before the start.

What exactly is Cheow Lan Lake like when you get there?

Cheow Lan Lake sits inside Khao Sok National Park and is known for its emerald water, towering limestone cliffs, and thick rainforest on the surrounding slopes. The water is calm enough for swimming and kayaking, and the lake is dotted with floating bungalows and rafthouse platforms where visitors stay overnight or stop for meals.

How long do you actually spend in Diamond Cave?

Diamond Cave involves a forest walk to the entrance, then exploration of the underground chambers with stalactites and stalagmites. The exact time depends on the group's pace and the day's schedule, but it is one of the main stops on the itinerary and is allocated a meaningful portion of the seven-hour tour.

Can you swim in the lake, or is it just for looking at?

You can swim in Cheow Lan Lake from Phutawan Rafthouse, where the tour includes time for swimming, kayaking, or simply relaxing on the platform. Kayaks are available to share if you want to paddle along the shore.

Is the lunch included, and what if you don't eat pork?

Lunch is included at Phutawan Rafthouse and is prepared fresh on the day. The menu is Thai food without pork, plus fresh fruit, so dietary needs are built into the meal.

Do you need to be fit or experienced to do this tour?

The tour is suitable for all physical fitness levels. The boat ride is passive, the cave walk is on a forest trail at a normal pace, and swimming and kayaking are optional activities at the rafthouse. You can choose to do them or rest instead.

What's included in the price, and what do you pay extra for?

The tour includes round-trip transfer from Khao Sok, national park entry, the longtail boat, life jacket, lunch, fruit, drinking water, shared kayaks, travel insurance, and a professional guide. Tips and personal expenses are not included.