Prehistoric Thailand may be traced as far back as one million years ago based on the fossils and stone tools found in northern and western Thailand. Stone tools have been found widely in Kanchanaburi, Ubon Ratchathani, Nakhon Si Thammarat, and Lopburi Provinces. Prehistoric cave paintings have also been found in these regions, dating back about 10,000 years.
From the mid-20th century, pieces of evidence of more recent human sedentary dwellings/communities are discovered at many locations on the Korat Plateau even today. The best known of these is at Ban Chiang in Udon Thani Province where bronze artefacts are found dating to 2100 BCE. The earliest grave excavated here is from about 4,000 years ago, while the most recent is from about 1,800 years ago.
Beside Ban Chiang, archaeological sites that are convenient to visit are as follows:
- Ban Prasat Archaeological Site - Pha Thaem National Park - Phu Phra Bat Historical Park - Pong Manao Archaeological Site