At the 9th kilometer, there is a walking path to the viewpoint. It is evergreen rainforest and the weather is cool all year round with moss and algae covered trees and rocks all around. Viewpoint is 900 meters above sea level; it is a stone courtyard protruding from the cliff. The area is about 15 square meters, wide view, overlooking Khao Rom across the length. The rainforest is dense to the field of pythons and Khao Samor Poon. This area has many kinds of highland birds such as elephant-jawed hornbills, black bulbuls, shovel-tailed hornbills, large snare-tailed bird, etc. The interesting plants are 3,000-year old pinetree, moss, Chong Nang Klee, Khao Kam grass.

Khao Kheow Viewpoint (Pha Trom Jai) is located a litter further from the entrance of Pha Deaw Dai Nature Trails; at the 10th kilometer area at the entrance to the Air Force's radar center, but it is open for general public to visit. From this point, you can see the vast expanse of grassland as far as the eye can see which is very beautiful on the Prachinburi province. It is a point at 4,233 feet above mean sea level.

Haew Narok Waterfall is located at Km. 24 on Highway 3077. From the parking space, you have to walk further about 1 km. through Huay Sa Mo Poon to reach the viewpoint of the first level. The waterfall consists of 3 levels: the first level is a steep cliff 50 meters high. During rainy season, streams rapidly flow and splash down to the bottom, resulting in sound and droplets of water spending over. The 2nd and 3rd levels are quite dangerous and not open to the public.