Cheow Lan Lake (Ratchaprapha Reservoir)
A vast emerald reservoir studded with dramatic limestone peaks rising straight from the water, often called the 'Guilin of Thailand' and the region's signature sight.
- Category
- Attractions & Landmarks
- Entrance fee
- As of 2026, national-park fee ~300 THB foreigner adult / ~150 child on top of boat costs; longtail day tours run roughly 1,500-2,500 THB pp. Confirm locally.
- Hours
- Daylight only; boats cannot run before sunrise or after sunset.
- Best time
- Dry season Dec-Apr for calm, clear water; go early morning for mist over the karsts and fewer boats.
- Time needed
- Full-day tour, or overnight at a floating raft house
About Cheow Lan Lake (Ratchaprapha Reservoir)
This is the picture that sold you on Khao Sok, and for once the reality lives up to it. Emerald water, limestone peaks shooting straight up out of the lake, the whole 'Guilin of Thailand' comparison earned rather than marketing fluff. It is genuinely worth it and not overrated.
The thing that turns a good visit into a great one is sleeping out here in a floating bungalow. Most people who overnight say it's the highlight of their whole trip, waking up to mist on the karsts with the lake to yourself.
Day tours in peak season can feel packed and a bit rushed, herded from boat to cave to lunch. If you can, either book a smaller operator or just stay the night. Go early for the mist and the quiet before the fleet arrives.
Highlights
- Emerald reservoir ringed by sheer limestone peaks
- Overnight stays in floating raft-house bungalows
- Early-morning mist drifting over the karsts
- Longtail boat trips from Ratchaprapha Pier
- The region's signature 'Guilin of Thailand' scenery
Tips
- Overnight in a floating bungalow if you can, most visitors rate it the highlight.
- Go early morning for mist over the karsts and fewer boats on the water.
- Peak-season day tours feel crowded and rushed, so pick a smaller operator.
- Remember the park fee is on top of the boat cost, and confirm prices locally.
How to get there
From Khlong Sok village it's ~60-65 km east by car, taxi or minivan (about 1 hr, ~1,000-1,500 THB private, less shared) to Ratchaprapha Pier, then a longtail boat onto the lake.