Phu Kradueng National Park is one of the most popular national parks in Thailand. Capped by its eponymous peak, the park covers with cliffs and waterfalls.Thailand's second national park is always cool at its highest reaches.There's a small visitor centre at the base of the mountain.The trail that passes six waterfalls in a forested valley is the most beautiful destination, even after November, when the water has largely dried up. There are also many clifftop viewpoints, some ideal for sunrise and sunset, scattered around the mountain.