The Sakon Nakhon Cave and Rock Art exhibition at the Phu Phan Museum presents models of prehistoric rock carvings and paintings found in the province, particularly those from "Tham Pha Lai Phu Pha Yon," which is notable for its cupule-like art—caused by rock carvings of lines and circular holes—reflecting the beliefs and lifestyle of ancient humans 2,000–3,000 years ago. It is considered one of the largest and most important cave art sites in Thailand.