Lonesome CliffIt is the widest and highest point of view of Khao Yai National Park, a place that offers a natural view. The shape of the mountain peaks formed by the erosion of the waterway is like understanding a new geological lesson of this fertile forest.

The Lonesome CliffIt Nature Study Trail is an elevated path around the perimeter. It starts and ends at a distance of 446 meters. It takes about 35 minutes to walk. On this path, you can see and understand the stories of the forest ecosystem, high swamp plants, cold city plants, forest builders and nature' complexity.  You'll find beautiful scenery on a lonely cliff.

The road from Nong Khing Intersection to Khao Khiao cuts through the sedimentary rocks of the Korat group. From Phu Rach, the junction of the Phra Viharn intersection to the top of the green mountain, after a sharp bend, reaches the parking lot of a lonely cliff. Across the parking lot, a walk ends at a courtyard about 5 meters wide above a steep cliff of a lonely cliff.  Which is a scenic spot for viewing the Mesa landscape caused by erosion of waterways through different durable mountain rocks. The plains are characteristic of the Korat rock group, which consists of many sedimentary layers.

Long-standing mountain elevations and erosion along the geological era created a stone courtyard on the steep cliff named "Lonely Pha" sandstone courtyard of the Temple Stone category, which consists of white and light grains. The same size of sand grains. Thick layers show the level of sloping layers. It is evidence of a clear change in the direction of the stream in the past.  The erosion of the waterway deep down the slope leads to the collapse of the rock supporting the lower part, leaving only the top layer about 1 meter thick and stretching out over the tree-covered bottom canyon. It is difficult to reach the depth.

The decay process transforms sandstone into white sand sediments and winds it into a deposition cycle, providing a foothold for many woodland species to grow and beautify the lonely cliff.

Mesa The morphology is distinguished by the water erosion process of various sedimentary rocks of "Korat Rock" with different resistance to erosion. Turn the vast plateau into a table-like mountain with an area of less than 10 square kilometers and steep hills such as Phukradueng and Phu Luang, etc. If the erosion continues until the area on the top of the mountain is less than 1 square kilometer, it will be called the Butte mountain.
Traces of the stream on the sloping layer. Evidence of ancient sediment accumulation by large connecting streams It is characterized by a rock layer's placement structure that tilts at an angle to the plane of the normal rock layer due to changes in the direction of the tide, making sand sediment unable to sink to a normal level. It must be tilted in the direction of the stream.

Interestingly, such as Chong Nang Klee, Khao Kluem grass, etc. There are also other large trees that are often covered with green moss and also Krisana wood. It takes about 15 minutes to walk through this rainforest. You can see a lonely cliff on your right and a yellow snake field in the middle. If you are lucky, this lonely cliff study route may find some rare birds such as mermaids.  a snare-tailed bird, bird, &c.

• Private Car: Drive along the Khao Yai National Park route (Thanarat Road) towards the park headquarters, continue on Route 2090 until checkpoint Kilometer 30, then turn right and drive for approximately 3 kilometers, following the signs to Pha Diao Dai.

• Travel within the Park: Pha Diao Dai is located near Sai Sorn Reservoir and can be accessed after visiting Heo Narok Waterfall, though it requires significant travel within the national park area.

• Best Time to Visit: Arrive before sunrise (around 05:30 AM - 06:00 AM) to see the sea of mist and the first light of day, especially during November to January.

• Attire: Since it is a high-altitude area with cool weather year-round, especially in the morning, bring a jacket and a hat.

• Safety Precautions: Exercise extreme caution near the cliff edge, do not step outside the designated areas, and avoid loud noises to not disturb the wildlife.

Admission Fee (Khao Yai National Park):

• Thai Nationals: Adult 40 THB, Child 20 THB

• Foreign Visitors: Adult 400 THB, Child 200 THB

Opening Hours:

• Open for visitors: 05:30 AM - 06:00 PM