Kalasin (519 km) is where dinosaurs’ fossils were excavated and are now exhibited at Dinosaur Research Centre in Sahatkhan District. Ubon Ratchathani (629 km) is the easternmost province of Thailand, bordering Laos on the east and Cambodia on the south. The renowned Pha Taem amd Pha Mon are sandstone cliffs featuring prehistoric colour paintings. Other attractions including beautiful old temples and many rapids and cascades along the Mun and Mekong rivers.