Haew Narok Waterfall is one of the most iconic and powerful waterfalls in Khao Yai National Park, part of the UNESCO World Heritage-listed Dong Phayayen–Khao Yai Forest Complex. The waterfall has a combined height_ of over 150 meters and consists of three major tiers, with the first tier dropping approximately 60 meters, making it the main accessible viewpoint for visitors.

The waterfall is fed by water flowing from Khlong Tha Dan, plunging dramatically into a deep rocky gorge below. During the rainy season, the immense volume of water creates a roaring sound that echoes throughout the forest valley, perfectly reflecting the meaning of the name “Haew Narok”, which translates roughly to “Hell Gorge.”

Visitors can reach the main viewpoint by walking along a 1-kilometer nature trail from the parking area. The route passes through dense tropical rainforest, filled with towering trees, moss-covered rocks, ferns, and diverse plant species. Along the trail, visitors will cross small bridges and shaded forest paths before descending steep metal stairways to the first viewing platform.

At the first-tier viewpoint, a wooden observation deck extends close to the cliff edge, allowing visitors to witness the tremendous force of the waterfall at close range. Cool mist fills the air while the thunderous sound of the cascading water reverberates through the canyon, creating a dramatic and unforgettable natural atmosphere.

The geological structure surrounding Haew Narok consists mainly of volcanic rock layers and sedimentary formations that have been eroded over millions of years, forming steep cliffs and deep ravines. This rugged landscape also helps preserve moisture, supporting a rich and fertile rainforest ecosystem throughout the year.

The forest surrounding the waterfall is home to a variety of wildlife, including wild elephants, gaurs, barking deer, wild boars, gibbons, and numerous bird species. Visitors may notice animal footprints or hear wildlife sounds while walking along the trail, especially during the early morning or evening hours.

The second and third tiers of the waterfall are located deep within the gorge and are considered highly dangerous. These areas are generally closed to the public and accessible only to park officials or research teams for conservation and scientific purposes.

One of the most important conservation features near the waterfall is the “elephant barrier system”, built after tragic incidents in which wild elephants fell into the gorge. This protective structure has become a significant example of wildlife conservation efforts within Khao Yai National Park.

Haew Narok is also regarded as one of the park’s key nature study sites, where visitors can experience the biodiversity of Thailand’s rainforest ecosystem. The area contains medicinal plants, rare tree species, wild mushrooms, and important watershed forests that contribute to the ecological balance of eastern Thailand.

During the rainy season (June–October), the waterfall reaches its most impressive state, with heavy water flow and vibrant green surroundings. In the cool season, the atmosphere becomes refreshing with occasional morning mist, making it ideal for hiking and photography. Even during summer, the shaded forest trail remains pleasant for nature walks and relaxation.

With its dramatic scenery, rich ecosystem, and important conservation history, Haew Narok Waterfall remains one of the must-visit natural attractions in Prachinburi and Khao Yai National Park for travelers seeking authentic rainforest experiences.

• From the Noen Hom checkpoint on the Prachinburi side of Khao Yai National Park, drive approximately 10 kilometers along the main park road. The parking area for Haew Narok Waterfall will be on the left-hand side. Facilities include a visitor center, restrooms, local shops, and clearly marked walking trails.

• Wear comfortable shoes with good grip, as the stairways and pathways can become slippery from moisture and moss

• During the rainy season, bring a raincoat or waterproof protection for cameras and phones

• Allow extra time for climbing the steep staircases, especially on the return walk uphill

• Swimming is strictly prohibited due to strong currents and dangerous cliff areas

• Follow park staff instructions carefully, as the surrounding forest is home to wild elephants and other wildlife

Admission Fee:

Thai Nationals

• Adults: 40 THB
• Children: 20 THB

Foreign Visitors

• Adults: 200 THB
• Children: 100 THB

(The same Khao Yai National Park entrance ticket can be used.)

Opening Hours:

• Open daily from 08:00 AM – 05:00 PM

• The area may be temporarily closed during periods of heavy rain or severe weather conditions for visitor safety, according to announcements from Khao Yai National Park.