Punyaban Waterfall is located within Lam Nam Kra Buri National Park in Ranong Province, Thailand. It is situated in a highly fertile tropical rainforest area with rich biodiversity. The terrain is characterized by a complex range of hills extending from the Tenasserim Mountains down toward the Kra Buri River, which forms part of the natural border between Thailand and Myanmar. The area consists of low to moderate elevations and remains humid throughout the year due to the influence of the monsoon climate.The waterfall is formed by a small stream originating from the upstream forested mountains. As the water flows downward, it passes through layers of hard and softer rock, resulting in continuous natural erosion that creates a multi-tiered waterfall structure. The geological composition mainly consists of granite and metamorphic rocks, which are highly resistant to erosion, allowing the water to flow in a smooth curtain-like pattern while preserving the cliff formations over time.

Punyaban Waterfall is a rain-fed stream system, meaning its water supply primarily depends on seasonal rainfall. As a result, it flows throughout the year. During the rainy season, the water volume increases significantly and cascades strongly over the cliff. In the dry season, the water level decreases, revealing more of the rock formations, but the flow remains continuous due to the high moisture retention of the surrounding forest ecosystem.The waterfall consists of three main tiers. The upper tier is the main Punyaban Fall, with a height_ of approximately 15–20 meters, featuring a curtain-like flow that is ideal for sightseeing and photography. The middle section consists of a natural stream flowing over rocks and vegetation, resembling small rapids. The lower section is a lush forested area rich in ferns, orchids, and other epiphytic plants, representing a highly intact ecosystem.

The surrounding area is a tropical rainforest with high biodiversity, including ferns, wild orchids, fig trees, and large native forest trees. Various small wildlife species and birds also inhabit the area, making it an important natural learning site and ecological zone.In terms of tourism, Punyaban Waterfall serves as a convenient roadside attraction located along Phetkasem Road. Visitors can easily access the site without requiring long-distance hiking. The area includes a parking lot, viewing platforms, and a short 300-meter nature trail that allows visitors to explore the upstream forest. This makes it suitable both for relaxation and nature learning.

Seasonal changes significantly affect the waterfall’s appearance. The rainy season (May to November) is the most visually impressive period, with strong water flow cascading over the cliffs. In the dry season, the flow is reduced but offers clearer views of the rock formations and a calmer atmosphere.In summary, Punyaban Waterfall is a natural attraction that combines scenic beauty, ecological richness, and easy accessibility, making it one of the most important ecotourism sites in Ranong Province.

• By car: From Ranong city center, take Phetkasem Road (Highway No. 4) heading toward Kra Buri District for about 15 kilometers. The waterfall is located on the right-hand side with clear signage.

• By public transport: Take a Ranong–Chumphon bus or a local shared minibus (songthaew) passing through Kra Buri District and get off at the entrance of the waterfall.

Admission Fee:

• Thai visitors: Adults 20 THB / Children 10 THB

• Foreign visitors: Adults 100 THB / Children 50 THB

• (Includes entrance fee for Lam Nam Kra Buri National Park)

Opening Hours:

• Open daily from 08:00 AM – 04:30 PM