Phu Phaya Archaeological Site Located in the north of Ban Na Charoen, Tambon Dong Mafai, is a limestone mountain that separates from the Phu Phan Mountain Range, with prehistoric paintings appearing on the cave walls. in many parts The first part in the "Lower Cave" area found a group of red paintings on the smooth surface of the cave wall, approximately 5 meters long, consisting of geometric patterns. palm animal images The second part is ""Tham On"" found red paintings scattered in groups. which is clearly seen as a rhombus portraits of reptiles large animal outline It is assumed that cave paintings Phu Pha Ya is between 2,000-3,000 years old. The year is similar to the age of the paintings discovered at Phu Phra Bat Historical Park. Udon Thani Province, the paintings look similar to those found at Pha Lai, Guangxi Province, China. To get to Phu Pha Ya Archaeological Site from the city, take Highway No. 210, Nong Bua Lamphu - Wang Saphung. Then turn right onto Highway No. 2097 to Suwan Khuha District and use the local bus route Suwan Khuha District - Ban Na Charoen.