The Baan Tha Chang Spring is a unique geological phenomenon in the Khao Yai area of ​​Pak Chong District, Nakhon Ratchasima Province. Locals call it "fountain" or "rotten pond," referring to the water that constantly bubbles up from beneath the ground. This site was discovered and developed into a natural tourist attraction through the cooperation of local community enterprises.

Geological Origin

This spring is a classic example of groundwater discharge, originating from rainwater falling on the limestone mountains within Khao Yai National Park. This rainwater seeps through the soil and limestone layers below the earth's surface, collecting in aquifers and undergoing a natural filtration process over many years.

When the groundwater reaches its peak and encounters a crack in the subsurface rock (in this case, a limestone fissure), it is forced by natural pressure to emerge to the surface, forming a continuous, year-round spring. The water is exceptionally clear and pure due to the removal of minerals and sediments. Furthermore, the water's high pH and high content of important minerals, such as calcium carbonate, contribute to its high alkalinity. When light hits it, it creates a beautiful refraction phenomenon, giving the water a beautiful blue-green or emerald-blue hue, resembling the Emerald Pool.

Development into a Community Tourism Destination

In the past, Nam Phut was simply a natural spring used by villagers for consumption and agriculture. Later, it became well-known among travelers and nature enthusiasts, leading to the establishment of a local community enterprise to manage and develop the area into a sustainable tourist destination. Community management has helped preserve the natural environment and maintain the clear, clean water quality.

The community has provided a variety of activity areas, such as encircling the main spring and a large pool for safe swimming and kayaking. Walking paths and wooden bridges have been constructed to provide convenient access to viewpoints. Basic amenities, such as restaurants, shops, and parking, are also provided. Most of the revenue from these services is reinvested into the Nam Phut area and community development.

Fountain is not only a remarkable tourist destination for its natural beauty but also an example of successful community-based tourism management, balancing the conservation of unique natural resources with generating income for locals. Fountain offers visitors a place where they can experience the pristine and tranquil beauty of nature, not far from the main attractions of Khao Yai.

Coming from the Mittraphap-Thanarat Intersection

• From the intersection, pass The Smoke House and head towards Palio, Khao Yai National Park. Drive for approximately 15 kilometers from the Mittraphap Intersection. Look for an alley on the left with a sign for Mom Muen Lai and Nam Phut Natural Spring (km 15). Turn left into the alley and continue left (remember, the alley is on the left). If you go to the alley on the right, it will be the alley for Belle Villa Resort & Mom Muen Lai. Continue straight for approximately 600 meters and you'll reach the Nam Phut parking lot. Parking is free. If you drive past it until you reach Palio, you've already passed it. The entrance to Nam Phut is approximately 1 kilometer before Palio.

Coming from the Khao Yai entrance on the Pak Chong side:

• Drive along Thanarat Road towards the Mittraphap Intersection. After approximately 7 kilometers, you'll reach Palio. Drive slowly and look to your right for an alley with a sign for Mom Muen Lai and Nam Phut Natural Spring (km 15). Turn right into the alley and continue left (remember, the alley on the left). If you go to the alley on the right, it will be the alley of Belle Villa Resort & Momuanlai. Drive straight for about 600 meters, and you will find Nam Phut parking.

• Swimming Attire: Bring a swimsuit or change of clothes, as most pools are suitable for swimming.

• Life Jacket: If you are not an experienced swimmer, please request or bring a life jacket, as some pools can be quite deep.

• Water Caution: Although the water is clear, the spring water is highly alkaline due to its high calcium carbonate content. Do not drink the water.

• Avoid long holidays: This place is extremely popular. Avoid visiting on public holidays or weekends to avoid crowds.

Admission Fees:

Admission:

• Free (Visitors are welcome to enter and play in the water for free)

Parking:

• Approximately 20 baht per vehicle (for private vehicles)

Kayaking Fee:

• 30 minutes: Approximately 100 baht per person

• 1 hour: Approximately 170 baht per person (This price usually includes a life jacket and basic accident insurance.)

Opening Hours:

• Open daily: 8:30 a.m.–4:30 p.m.