Khao Nan National Park spans a vast area across Tha Sala, Nopphitam, and Sichon districts, making it one of the most remarkable natural gateways in southern Thailand. In Tha Sala District, the park headquarters serves as the main access point to Sunantha Waterfall, locally known as Khao Nan Waterfall. This medium-sized waterfall is distinguished by water flowing dramatically from a high rocky cliff into a wide, crystal-clear pool below, which is suitable and safe for swimming.

Along the Sunantha nature study trail, visitors can enjoy the sounds of birds and may encounter rare wildlife such as serow or barking deer, as well as the impressive giant staghorn fern, an ancient fern species with broad, fan-shaped leaves that thrives only in fertile forests. Traveling north into Sichon District reveals the beauty of Haew Si Thong Waterfall, a multi-tiered waterfall with seven levels. The fourth tier stands out with its wide rock platform where water gently flows across the surface.

Nearby, Khlong Pao Waterfall and Khlong Phao Waterfall offer smaller, quieter cascades surrounded by lush forest, ideal for visitors seeking a peaceful and private natural setting. For adventure seekers in Nopphitam District, Hong Cave presents a unique experience with a stream flowing through the cave and stalactites and stalagmites shaped like swans, inviting exploration through cool, clear water.

Those wishing to challenge themselves can trek to the summit of Khao Nan Peak, standing at 1,438 meters above sea level. This overnight hiking route rewards travelers with breathtaking views of sea mist and cloud forest landscapes. Parts of the park also connect to Khlong Ching Forest, creating the scenic Khlong Ching viewpoint, where layered mountain ranges stretch endlessly into the distance.

All water sources from Khao Nan form the origin of Khlong Klai River, which flows through Tha Sala and sustains local orchards and community life. The park headquarters area is well maintained, with landscaped grounds and designated camping areas for those who wish to wake up to fresh air and sunlight filtering through the forest canopy.

Park rangers are friendly and ready to share knowledge about the complex watershed ecosystem. Khao Nan National Park is not just a tourist destination but a valuable natural heritage that brings together caves, waterfalls, and mountain peaks in one place. The tranquility of the forest, combined with the sound of flowing water and the scent of tropical rainforest, helps restore energy and peace of mind. Standing near Sunantha Waterfall or reaching the summit of Khao Nan offers a once-in-a-lifetime experience for true nature lovers.

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How to Get There

• By private car: From Tha Sala District, take Highway No. 401 toward Sichon District, then turn left onto Highway No. 4141 (Tha Sala–Taling Chan Road). Follow the signs to Khao Nan National Park until reaching the park headquarters and Sunantha Waterfall.

• By public transport: Motorbike taxis or hired vehicles are available from Tha Sala town. The distance is approximately 20–30 kilometers from the town center.

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Travel Tips

• Wear shoes with good grip, as some trails can be slippery due to moss.

• Check water conditions with park staff before swimming, especially during the rainy season.

• Bring drinking water and snacks, and take all trash out of the park.

• Prepare mosquito repellent or leech protection if hiking deeper into the forest.

• Arriving around 9:00–10:00 a.m. allows more time to explore and relax.

• Contact the park in advance if you plan to stay overnight.

• Mobile phone signals may be weak in waterfall areas.

• Late morning sunlight creates beautiful photo opportunities at the waterfalls.

• Keep personal belongings secure while swimming.

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Entrance Fee:

• Thai nationals: Adults 40 THB / Children 20 THB

• Foreigners: Adults 200 THB / Children 100 THB

• Additional vehicle fees may apply

Opening Hours:

• Open daily from 8:30 a.m. to 4:30 p.m.