Thai National Parks

About Khao Sok


Being the most popular mainland national park destination in South Thailand, Khao Sok is a rainforest with great diversity of plants and wildlife. It is one of the few bigger national parks in the country relatively easily accessible by public services from nearby Phuket, Krabi, Khao Lak, Surat Thani, Ao Nang (Railey Beach). The main attractions of the park are iconic limestone hills, waterfalls accessible by hiking through the lush jungle, raft houses sperad over Khao Sok lake, caves, few waterstreams of which Sok River is the most popular one.

Khao Sok was established as Thailand's 22nd national park in 1980 by The Royal Forest Department. The park covers 739 km² land area of Amphoe Phanom and Ban Takhun in Surat Thani province and includes the Cheow Lan reservoir dammed by the Ratchaprapha dam. The relatively convenient distance to Koh Samui, Phuket, Krabi and Khao Lak makes this park the most popular national park in South Thailand.

Khao Sok is part of Khlong Saeng - Khao Sok Forest Complex covering allthogether around 5,316 km². The complex incorporates 12 protected areas including some offshore islands in the Andaman Sea. Khao Sok has Thailand's largest virgin forests and said to be one of the oldest evergreen rainforest in the world, according some sources more diverse than the Amazon Rainforest (arguably, should be taken with a pinch of salt).

While the park is home for many exotic wild mammals such as Asian elephant, Malayan tapir, gibbons it is more famous for the symbolic flower of Surat Thani Province, the huge Bua Phut (Rafflesia kerrii) flower found on a trail starting from main road south of the park, it can be up to 70-80 cm in diameter, blooming only October to December but not for sure whole October or December.


The park is home to a wide variety of mammal species such as elephant, gaur, banteng, sambar deer, sun bear, Asian black bear, malayan tapir, macaque, gibbon, serow, mouse-deer, porcupine, marbled cat, wild boar, Asiatic wild dog and many more. Some of these animals are rare, not easy to find even if stayed in the park a year.

Great hornbill, helmeted hornbill, white-crowned hornbill, osprey, brahminy kite, blue-banded kingfisher, rufous-collared kingfisher are few of the hundreds of bird species that can be found in the park.

Wildlife watching

Although the park has some of most exciting mammal and bird species in Thailand, it is very rare to see any of these around the popular tourist areas. Lucky tourists will see long-tail macaques, distant call of gibbons may be heard in the morning, sometimes boars or deer may show up on trails.

Some tour companies advertise Khao Sok as a popular destination to see tigers. There have been tigers in Khao Sok, there may still be a smaller population deep inside the inaccessible areas, but no one has seen any for quite a while. The top tiger destination in Thailand is Huai Kha Khaeng Wildlife Sanctuary where nearly 40 to 50% of Thailand's tiger population lives, but even there tiger sightings are very rare.

While it is not easy to find bigger animals in Khao Sok's accessible areas, it is a great destination to find reptile and amphibian species. With a bit luck, many of Thailand exciting lizard, snake and amphibian species can be found along the trails to the waterfalls.

To see a longer list of species found in Khao Sok, visit our Wildlife at Khao Sok page.


There are two main areas of the park; the area around the headquarters/the visitor center and Cheow Lan Lake. For more detailed information about the lake attraction, visit our Chew Lan Lake page.

The wet season is between late April and December with heavy rain between June-November, the dry season is January to April, average temperatures ranging from 22°C to 36°C all year around.

What time of the year to visit the depends completely on what you think about the weather. The park can be very wet, but at the same time very lush and full of wildlife during the rainy season. During the rainy season, at the times, there can be too much rain for most people. The less rainy/drier months are December to April/May is preferred by most tourists when it is minimum chanse for rain, easier to walk the trails and not too strong waterflow in the rivers with more clear waters.

The entrance fees are 300 THB for foreigners (children 150 THB) and 40 THB for Thai citizens (children 20 THB).

Get there

The headquarters area is easily accessible by public transportation, buses and minivans from several destinations stops by at the main road junction 1.8 kilometres from the park entrance. Most hotels are located in the area between the entrance and the main road, but quite few spread out some 3-4 km further east. Once dropped off at the main road, you will have to walk to your hotel which can be up to 2-4 kilometers away or arrange a transportation from your hotel to pickup from the junction. There are many options for stay in the area on a walking distance to the visitor center.

Cheow Lan Lake, which is the most popular destination of the park needs a bit more efford to get to, it needs partly private transportation. The lake is accessible from a longtail boat pier near the dam on south-east side of the park, 65km from HQ. Raft houses are one of the main attractions of the park with beautiful views over the lake. There are many caves, viewpoints and trails all accessible with boats operating from the raft houses. A round trip longtail boat for 10 pax starts from 1500 Baht up to 4,000 Baht, the price difference depends on the distance, it is also possible to hire a boat for overnight stay for around 400 to 500 Baht more.

There are no public services directly to the pier of Chew Lan Lake. The nearest point public transportations options can get to is Ban Ta Khun village, 12 km south from the pier. For info about private transportations to headquarters area or to Cheow Lan Lake Pier, visit our taxi details page for Surat Thani (From 1,700 Baht), Phuket (From 2,800 Baht), Krabi (From 2,500 Baht) and Koh Lanta (From 4,000 Baht), these market rate quotes are nearly 1,000-2,000 Baht cheaper than what most agency and hotels offer.

For more detailed info about public transportation options from nearby towns, visit our get there section.

Getting around & activities

Around the headquarters area there are only 2 relatively short "trail" options tourists allowed walk on their own, the longer bits of both options requires guide assistance. See more detailed info about these trails further down in Attractions-section.

Nearly 35 km east from the headquarters, there is an interesting trail starting from Bang Hman Ranger Station. See more details and location of this at "Cave Underwater Trail" on attractions section.

There is another trail nearly 10-12 km east from the headquarters, starting from the main road to Cheow Lan Lake. It is 6.5 km long one way, but this trail is normally used for hiking in combination with a boat trip to caves and/or rafthouses, simply said an overnight stay required.

Local guides must be hired latest the day before, can be hired for 500 THB for half day and 1,000 THB for full day (early 2017 prices), can be arranged from the agencies near HQ or from hotels/guesthouses. It may be possible to arrange from the Visitor Center in the park as well. More professional English speaking guides can be arranged from the hotels for higher price that normally includes drive around, meals and refreshments.

You are not recommended to walk longer trails on your own by breaking national park regulations. It is easy to get lost and it is real jungle with wild animals we are talking about.

Various tour companies offers up to 3-4 days tours including hiking deeper into the jungle on alternative trails all over the national park. Some of these trails are around Cheow Lan Lake, accessible with long-tail boats, leads to various caves and viewpoints. Tour packages may also cover tours to other protected areas around Khao Sok.


Guesthouses around the headquarters area offers various activities such as canoeing, rafting and guided tours on different areas. There are plenty of restaurant and shops along the main road to the entrance of the park.

Various hotels or tour operators offers longer hiking trips inside the national park with possibility to sleep in jungle. Some hotels also have their own trails not mentioned here.


Some resorts around the headquarters area offers pathetic and cruel tours with elephants in captivity. If you are considering attending one, please read about "elephant crushing" and see various videos on YouTube about the subject. Rangers trying to protect wildlife in various national parks from poachers gets killed or injured almost on monthly basis. This wile confronting poachers who targets various wildlife, sometimes killing entire families of elephants to catch a single elephant baby to feed this dirty market with elephants.

Attractions of Khao Sok

Cheow Lan Lake

Please visit our detailed Cheow Lan Lake section to read more about the lake and some of the attractions accessible by boat.

HQ area and Campsite

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The HQ is located in a convidient walking distance from the area where all hotels are located. There is a camping ground, visitor center in the HQ area as well as a restaurant and toilet/shower facilities. The restaurant is run by a resort at the edge of the park, but plenty of restaurants are in walking distance from the campsite right outside the park. The area is quite spacious with a river running through it.

Many of the waterfalls in the park can be accessed by hiking on the dirt road that starts on the east side of campsite. There are also couple of trails on the north side of campsite, one of them leading to Sip-et Chan Waterfall. Read about the trails and waterfalls further below.

Ton Kloi Waterfall Trail

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This 7 km long trail along the Sok River is the main trail of the park,. There are many shorter side trails between the trail and the river.

The first 2.9 km of the trail until a checkpoint guarded by rngers is freely accessible by tourists and is more like a narrow dirt road. On this bit of the trail 2 waterfalls and one swimming pond can easily be visited without any guide requirement.

A guide will be required to walk the 3rd to 7th kilometers of the trail, which is proper jungle trail, passing by several waterfalls, one swimming spot and ends at Ton Kloi Waterfall.

Wing Hin Waterfall

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20 m high waterfall is about 2.8 km in a relatively convinient walking distance from the visitor center. It is located on the other side of the Klong Sok River from the road, but easily accessible by step across on rocks.

Wang Yao pool

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For swimming, 3km from the visitor center

Bang Liap Nam Waterfall

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Small waterfall, but nice walk along the river, trekking through bamboo and giant trees. 4.5 km from the visitor center.

Bang Hua Rat Waterfall

Popular for rafting activities, this waterfall with rapid water is 3km from the visitor center.

Than Sawan Waterfall

It is on a tributary of Sok River, accessible through a slippery trail and wading that can be dangerous during the rainy season. 6km from the visitor center.

Tang Nam Gorge

A pair of cliffs which Khlong Sok river runs between, nice place to swim. Located approximately 6km east from the headquarters accessible by the same trail to Ton Kloi Waterfall (the last waterfall).

Ton Kloi Waterfall

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One-level waterfall Located 7 km from the visitor center, it can be admired all year around. Approximately 1 km away from Tang Nam.

Mae Yai Waterfall

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This 30 m high and one-level waterfall is is on the main road between Surat Thani and Takuapa at 113rd km, 5.5 km from the visitor center. The waterfall has very little to offer during the dry season, recommended only during the rainy season. There is no sign on the road telling where the trail starts, but while driving from HQ area west it is on the right rise, few hundred meters after the viewpoint to the left. A small dirt road leading to a open space where car/motorcycle etc can be parked.

San Yang Roi viewpoint

A view point on west side of the park, 2 km from the visitor center.

Sip Et Chan Falls

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This 11 tiered falls is accessible by a nearly 4 km long trail starting from the north side of the camp ground. The first bit of the trail is a wooden boardwalk which tourists are allowed to walk freely, but guide reqired from a trail fork nearly 400-500 meters north. There chances to see some mammals or birds along this trail is better because it is not used that frequently as the main trail west. Great hornbill, bamboo woodpecker, orange-breasted trogon, banded pitta and black-and-yellow broadbill are few of many bird species to be found along the trail.

Cave Underwater Trail

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Nearly 35 km east from headquarters, there is an interesting trail starting from Bang Hman Ranger Station. A guide for this trail can't be arranged from the visitor center, many hotel personnels in the area wouldn't even know about it. A hiking trip there needs to be discussed with guides to see if they offer service there. It is a long and impressive circular trail through a cave, but the bit through the cave and after may not be accessible if there is risk for rain, the water levels inside the cave can rapidly increase up to several meters. The first bit of the trail until the cave is 3km, the cave which has 2 exits is nearly 400 meters long. For those seeking challenge, the trail continues 7 km circular back to the ranger station from the other end of the cave, but the trail becomes very difficult to walk, occasionally too steep and very slippery. On way down, there is a 70 meters high waterfall.

Cave Underwater

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Accessible by a 3 km trail from Bang Hman Ranger station nearly 34 km east from headquarters, Cave Underwater is an interesting 400 meter long cave with two exits and a water-stream flowing between both ends. The trail is moderate and requires guide or ranger guidance to get there. Most of the walking inside the cave is through the water-stream up to knee level, but at one point towards the end near the second exit, the depth can be more or less 1 meter through a 4-5 meter wide pond. The surface is slippery from time to time. The cave has some nice stalactites and stalagmites.

Due to tragic deaths in another similar cave in the past, the guides won't let anyone to enter the cave if there has been heavy rain or any risk there will be rain. The water levels tends to increase rapidly, sometimes the water level gets couple of meter high with very strong stream.

The area around this trail is excellent to see butterflies and reptiles. With bit of luck some hornbill species may show up, great hornbills are quite common in the area. Although sighting is quite rare, huge footprints of gaurs are quite common along this trail, gaurs are 4th biggest living land mammals. Well inside the cave, some frog species and few bats can be seen. Also, if lucky a harmless cave racer (a snake species, also called "beauty rat snake") may show up.

Bat Cave - Tham Khang Khao

The cave has nice rock formations with chambers suitable for various bat species. It is 21km from the visitor center.

Videos from Khao Sok National Park

  • Great argus - Khao Sok National Park

    Great argus - Khao Sok National Park

  • Waterfall - Khao Sok National Park

    Waterfall - Khao Sok National Park

  • Snake - Khao Sok National Park, Thailand

    Snake - Khao Sok National Park, Thailand

  • Cicadas at Chieow Laan Lake - Khao Sok

    Cicadas at Chieow Laan Lake - Khao Sok

  • Blue winged Leafbird fighting with huge grasshopper

    Blue winged Leafbird fighting with huge grasshopper

  • Snake - Khao Sok National Park

    Snake - Khao Sok National Park

  • Playful crab-eating macaques - Khao Sok National Park

    Playful crab-eating macaques - Khao Sok National Park

  • Gibbons calling at Khao Sok National park

    Gibbons calling at Khao Sok National park

  • Underwater film festival Marseille ''the secrets of Khao Sok National Park''

    Underwater film festival Marseille ''the secrets of Khao Sok National Park''

  • Gorge - Khao Sok National Park

    Gorge - Khao Sok National Park

  • Gibbons calling in the morning - Khao Sok National Park

    Gibbons calling in the morning - Khao Sok National Park

  • Lantern/lanthorn fly - Khao Sok National Park

    Lantern/lanthorn fly - Khao Sok National Park

  • Macaques - Kao Sok National park

    Macaques - Kao Sok National park

  • Macaques - Khao Sok National Park

    Macaques - Khao Sok National Park

  • Lizards - Khao Sok National Park

    Lizards - Khao Sok National Park

  • Khao Sok National Park

    Khao Sok National Park

  • Monitor lizard - Khao Sok National Park

    Monitor lizard - Khao Sok National Park

  • Sok River, Khao Sok National Park

    Sok River, Khao Sok National Park

  • Khao Sok National Park

    Khao Sok National Park

Species photos of Khao Sok National Park

  • White-throated kingfisher

    White-throated kingfisher

  • Asian elephants

    Asian elephants

  • White-throated rock thrush (male) - Khao Yai National Park

    White-throated rock thrush (male) - Khao Yai National Park

  • White-fronted scops owl

    White-fronted scops owl

  • Malacocincla abbotti

    Malacocincla abbotti

  • White-vented myna

    White-vented myna

  • Yellow-rumped flycatcher (male)

    Yellow-rumped flycatcher (male)

  • White-crowned hornbill

    White-crowned hornbill

  • Asian fairy-bluebird

    Asian fairy-bluebird

  • Asian emerald cuckoo (male)

    Asian emerald cuckoo (male)

  • Ashy minivet

    Ashy minivet

  • Zitting cisticola

    Zitting cisticola

  • Wreathed hornbill

    Wreathed hornbill

  • Boiga drapiezii

    Boiga drapiezii

  • Boiga drapiezii

    Boiga drapiezii

Open map of Khao Sok


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Rafflesia kerrii flower

Rafflesia kerrii flower

Copyright 123RF,

Monkey in the wilderness

Monkey in the wilderness

Copyright iStockphoto,

Khao Sok National Park

Khao Sok National Park

Copyright iStockphoto,

Yellow-throated Marten

Yellow-throated Marten

Copyright iStockphoto,

Ratchaprapha Dam

Ratchaprapha Dam

Copyright iStockphoto,

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