Tum Phet Tum Thong National Park

Open Days: Daily

Opening Hours: 06:00 - 18:00

 

Tham Phet – Tham Thong Forest Park is one of the most distinctive natural attractions in Nakhon Sawan Province, located within the limestone mountain range of Khao Chon Duea in Tak Fa District. This destination is best known for its extensive cave system, consisting of more than 70 limestone caves, each offering unique formations, textures, and colors shaped by natural geological processes over millions of years.

 

Covering an area of approximately 3,000 rai, the park was officially established as a forest park on January 10, 1997. The terrain is characterized by low karst mountains, formed from ancient marine deposits that were uplifted and eroded over time. These geological transformations created a network of caves, underground passages, and natural chambers that define the park’s identity today.

 

The caves are the primary highlight of the park. Well-known caves include Tham Morakot (Emerald Cave), Tham Wang Kaimuk (Pearl Chamber Cave), Tham Pradap Phet (Diamond Decor Cave), Tham Prakai Phet (Sparkling Diamond Cave), Tham Phaya Naga, and Tham Dao Dueng. Each cave offers a different experience, with variations in size, depth, and internal structure. Some caves are easily accessible, while others require short hikes or moderate trekking through forest trails.

 

Inside the caves, visitors will encounter spectacular stalactites and stalagmites formed from calcium carbonate deposits. These formations grow extremely slowly, often taking hundreds or thousands of years to develop. In some chambers, the cave walls shimmer under light, resembling glittering crystals or diamonds. This phenomenon is caused by mineral particles embedded within the limestone, reflecting light in a way that creates a sparkling visual effect.

 

Another striking feature of the caves is their natural coloration. Some sections display hues of red, green, or bluish tones due to mineral composition such as iron oxide, copper compounds, and other trace elements. These natural colors give each cave a unique identity and create a surreal atmosphere that feels almost otherworldly.

 

Beyond the caves, the forest park offers a network of nature trails that allow visitors to explore the surrounding ecosystem. The terrain alternates between limestone ridges, forested slopes, and open rocky areas. This diverse environment supports a variety of plant species, including the rare and culturally significant Mok Rachinee tree, which grows abundantly in this region.

 

Hiking within the park provides a balance between accessibility and adventure. Some trails are relatively easy and suitable for beginners, while others involve steeper climbs and require careful navigation over uneven terrain. The experience is particularly rewarding for those who enjoy eco-tourism and outdoor exploration, as it offers a close encounter with both geological and ecological diversity.

 

The park is also associated with historical and cultural narratives. Around 1910, a sacred bronze arrow shaped like a three-headed naga was discovered in the Khao Chon Duea area. It was later presented to King Rama VI, who named it “Phra Saeng Sorn Kamlang Ram.” This story adds a layer of cultural significance to the site, linking it to Thailand’s royal history.

 

One of the most intriguing caves is Tham Phaya Naga, known for its underground water source that never dries up. Local communities consider this water sacred, and it has been used for generations. In certain conditions, visitors may hear sounds resembling ocean waves inside the cave, which contributes to its mysterious atmosphere.

 

Getting There Traveling to Tham Phet – Tham Thong Forest Park from Bangkok is relatively straightforward. By car, take the Asian Highway and connect to Phahonyothin Road toward Tak Fa District. At kilometer markers 247–248, a small paved road leads approximately 200 meters to the park office. Alternatively, travelers can take a northern railway train from Bangkok to Takhli Station and continue by local transport for about 12 kilometers.

 

For the best experience, visitors are advised to start their journey early in the morning, especially if planning to explore multiple caves or hike longer trails. The park can be visited year-round, but the most comfortable period is during the cool season from late rainy season to winter, when temperatures are moderate and the landscape is lush.

 

During the rainy season, the forest becomes particularly vibrant, but trails may be slippery. Visitors should wear appropriate footwear and exercise caution. In the dry season, conditions are easier for walking, although temperatures can be higher during midday.

 

Essential items for visiting include sturdy walking shoes, a flashlight or headlamp for cave exploration, drinking water, insect repellent, and light protective clothing. Since some caves have limited natural light, proper illumination is necessary for safety and visibility.

 

Visitors are encouraged to follow responsible tourism practices. The cave ecosystem is fragile, and touching formations, leaving waste, or making excessive noise can disrupt natural processes and wildlife habitats. Respecting the environment ensures that the park remains preserved for future generations.

 

In summary, Tham Phet – Tham Thong Forest Park offers a rich combination of geological wonder, natural beauty, cultural heritage, and outdoor adventure. It stands out as one of the lesser-known yet highly rewarding destinations in Nakhon Sawan, especially for travelers seeking a deeper and more immersive nature experience.

 

 

A: Yes, but some caves require basic hiking and physical readiness.

 

A: There are more than 70 caves discovered in the area.

 

A: The cool season offers the most comfortable conditions for exploration.

 

A: A flashlight and proper shoes are highly recommended.

 

A: Yes, but a full-day trip is ideal for exploring multiple caves.