3,000-year-old Petroglyphs at Phu Pha Yon

Sandstone cliff carvings on the grounds of Wat Tham Phu Pha Yon, in Sakon Nakhon’s Phu Phan district, are estimated at 3,000 to 3,500 years old — among the oldest documented rock art in northeastern Thailand. Entry is free, and the site sits about an hour’s drive from Sakon Nakhon town.

The engravings were cut into the rock face with metal-tipped tools, a technique similar to the prehistoric carvings at Ban Chiang, the UNESCO World Heritage site roughly 100 km away in Udon Thani province. Panels along the cliff base show human figures and buffalo — a clue to the agricultural life of the people who made them — alongside geometric patterns and symbols that researchers connect to fertility rites practiced by early communities in the region. The figures are simple and worn by three millennia of weather, not the polished carvings of a museum piece; some panels are easier to make out than others depending on the angle of the light.

Wat Tham Phu Pha Yon itself climbs the mountainside above the carvings, and a path continues up to a Buddha footprint shrine near the summit, with views out over the forested ridges of the Phu Phan range. The site draws few visitors even by Isan standards — expect to have the trail largely to yourself outside of Thai holiday weekends, with only birdsong and wind through the trees for company.

Insider Tip: Combine the petroglyphs with the rest of Wat Tham Phu Pha Yon in one visit — the walk from the carvings to the Buddha footprint shrine adds maybe 20-30 minutes and is the more scenic half of the trip.

Watch out: There’s no shade over much of the cliff-base trail and no water for sale on site. Bring your own, especially outside the cool season.

Reaching Phu Pha Yon means a drive through rural Phu Phan district followed by a short walk to the cliff base — there’s no shortcut and no tour bus stop, which is precisely why the site stays quiet. Visit November through March for the coolest, driest conditions; the rest of the year brings humidity and the possibility of a slippery trail. For a fuller picture of the province’s temples, lakes, and Isan food scene, pair the trip with a wider look at Sakon Nakhon.