Phu Wiang National Park (PWNP) is located in Phu Wiang District, Khon Kaen Province

Khon Kaen Province

-History:The first city of the area was established in 1783 when Rajakruluang settled there with 330 people. King Rama I made Rajakruluang the first governor of the area when establishing tighter connections with the Isan area. The main city was moved six times until in 1879 it reached its modern...

, northeastern Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

. It is best known for its numerous dinosaur bone archaeological sites, The park is one of the world's largest dinosaur

Dinosaur

Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...

 graveyards. In 1996, the remains of Siamotyrannus isanensis

Siamotyrannus

Siamotyrannus is a genus of theropod dinosaur from the early Cretaceous . It is known from a partial skeleton which includes part of the pelvis, the sacrum, and a number of vertebrae. The fossils were found in 1993 by Somchai Traimwichanon in the Sao Khua Formation of northeastern Thailand...

, a new family of carnivorous thunder lizards, were unearthed in the park. The Phu Wiang Dinosaur Museum

Phu Wiang Dinosaur Museum

Phu Wiang Dinosaur Museum is a geological museum mainly exhibited the story about fossils. It is under administration of the Department of Mineral Resources, Ministry of Natural Resources and Environment, the Royal Thai Government situated in the Khok Sanambin public area with an area of in...

 is situated within the park and displays many of the park's finds. The park, measuring 325 square kilometres (125.5 sq mi) in size, is located approximately 85 kilometres (52.8 mi) northwest of Khon Kaen

Khon Kaen

Khon Kaen is a city in Isan, Thailand. It is also the capital of Khon Kaen province and the Khon Kaen district.-Geography and demography:Khon Kaen is located in the Khorat Plateau, in the central-northwestern area of Isaan...

. The area is characterized by a central plain and low hills.