The Department of Fine Arts is examining artefacts believed to be from about 3,000 years ago.
The ancient items -- which include 10 items of stone resembling axes and earthenware -- were found yesterday by a villager on a cassava plantation in Ban Taling Chan in Khon Buri district in Nakhon Ratchasima.
Sompong Sarawan, the villager who found the artefacts, said the items were buried a foot underground and surfaced after the soil on the plantation was swept away by water run-off triggered by heavy rain.
Officials from Phimai National Museum were called to examine the site and an initial investigation revealed that the items were roughly 2,500-3,000 years old.
Some broken pieces of pottery were also found but their age has not yet been verified, said Artidhaya Tirachote, the official archaeologist at the museum.
All the artefacts have been handed to the museum for public display while additional experts are to be brought in to examine the items, she said.