Nong Sand Resort is situated near to the Phu Kradueng National Park (Thai: อุทยานแห่งชาติภูกระดึง), in the Si Than sub-district of Amphoe Phu Kradueng, Loei Province, is one of the best known national parks of Thailand, with a high point of 1,316 m (4318 ft) elevation at Khok Moei. It was proclaimed a national park on 23 November 1962.

"Phu" (ภู) comes from the Thai-Isan word "phukao" (ภูเขา), meaning mountain.[3] The name "kradueng" (กระดึง), or "krading" (กระดิ่ง) in the local dialect of Loei Province, can be translated as "rakhang yai" (ระฆังใหญ่), meaning "large bell". This name comes from a legend relating to a Buddhist holiday. During the holiday many of the townspeople heard the sound of a large bell. They believed it to be the bell of Indra.

Phu Kradung is a cool and comfortable all year round. The average temperature is 15°C. making it ideal for trekking and hiking in this beautiful national park.

The flora is a mix of pine forest and savannah providing a habitat to elephants, Asian jackals, Asiatic Black Bears, Sambar Deer, Serows and white-handed Gibbons which all  inhabit the 348-sq-km park.

Explore the trails which pass six waterfalls in the forest on your way to the many clifftop viewpoints and watch the famed sunrises and sunsets around the mountain.

Phu Kradueng is a giant, heart shaped, sandstone mountain in northeastern Thailand. It is located in a region more commonly known as Isan. Phu Kradueng means "Bell Mountain" in Thai for the bell-shaped peak that makes up the summit. It consist of a lone, steep-sided mountain, which rises out of a flat plain that covers over 134 square miles and is crowned by a 23 square mile plateau.

Phu Kradueng is 5.5km in length and takes around 3 to 4 hours to climb, the hike is scenic and rest stops are roughly every 1km with food vendors, once on top it’s 3 km to the Visitor Centre.