A quern stone was found by greenkeepers at Leighton Buzzard golf course as they dug out a new tee.
Club Captain Neil Bagshawe told BBC Three Counties Radio how they found it.
“The guys were digging the fourth tee to renew it and about a metre down they found this flat round object around 14 inches in diameter which turned out to be a quern stone” he said.
Quern stones were used for grinding corn before the introduction of mill stones, but despite this, it’s not actually that common to find one.
“Apparently only three have ever been discovered in the south of England so it is quite rare” said Mr Bagshawe, “and even rarer to find one that is completely intact.