Huai Pa Tad is an Unseen Thailand natural attraction located within the Tham Prathun Wildlife Sanctuary. It is distinguished by its enclosed limestone valley, formed by the collapse of an ancient cave, creating a deep basin surrounded by steep rock walls. This unique geological formation isolates the area from the outside world, resulting in a humid climate and a distinct ecosystem that remains cool and lush throughout the year. Such conditions have allowed rare plant species and specialized wildlife to thrive in this secluded environment.

Entering Huai Pa Tad is an experience in itself. Visitors must walk through a completely dark cave corridor approximately 40 meters long before emerging into the hidden forest within the valley. Upon exiting the cave, the scenery suddenly opens to a dense green forest that feels like a different world. The area is dominated by Tad palms, large saw-leaf palm trees that serve as the iconic symbol of Huai Pa Tad. These palms coexist with uniquely shaped limestone formations and other native plants such as Tao Rang, Pliao, and wild salak, creating an atmosphere reminiscent of a prehistoric landscape, as if stepping back into the age of dinosaurs.

Beyond its rich vegetation, Huai Pa Tad is also home to rare wildlife, most notably the pink dragon millipede. This unique species is found only in Thailand’s limestone forests and is typically seen during the rainy season. It is considered an indicator species that reflects the health and richness of the ecosystem. A nature trail has been developed as a circular walking route of approximately 700 meters, allowing visitors to comfortably explore the area while observing natural features and admiring the cave’s stalactite and stalagmite formations along the way.

The overall atmosphere inside the valley is quiet, mysterious, and refreshingly cool year-round. Sunlight filters down through gaps in the surrounding cliffs, creating striking patterns of light and shadow that enhance the sense of wonder. This setting makes Huai Pa Tad a paradise for nature photographers and artists seeking inspiration from unusual tree forms and dramatic natural lighting. It is also a popular destination for families who wish to introduce children to geology and botany through direct experience with nature.

Huai Pa Tad can be seen as a hidden prehistoric forest concealed behind the darkness of a cave. Walking through the cave entrance into the lush valley beyond offers a new perspective and an unforgettable encounter with the remarkable balance and creativity of nature found within this extraordinary landscape.

By Private Car:

• From Uthai Thani city, take Highway 333 through Nong Chang, then turn onto Highway 3438 toward Lan Sak. Clear signage for Hup Pa Tat is visible along the route.

By Public Transport:

• Take a van from Bangkok to Uthai Thani or Nong Chang, then catch a local songthaew (pick-up truck taxi) on the Uthai Thani–Lan Sak route.

Best Season:

• Accessible year-round, but August to November is the best time to see the Shocking Pink Dragon Millipede and the lushest greenery.

Equipment:

• Bring a flashlight for the dark cave passage (rentals are usually available at the entrance) and wear sturdy walking shoes as the path can be slippery.

Photography:

• The best lighting occurs between 11:00 AM and 1:00 PM, when the sun is directly overhead and beams through the valley openings.

Conduct:

• Avoid loud noises and do not touch the dragon millipedes. Bring your own drinking water as there are no shops inside the valley.

Admission Fee

• Thai Citizens: Adult 20 THB, Child 10 THB

• Foreign Visitors: Adult 200 THB, Child 100 THB

Opening Hours

• Daily from 08:30 to 16:30

• It is recommended to enter by 16:00 to ensure enough daylight for the walk