He alerted Colin Renfrew who was excavating at Quanterness .
The Liddle Burnt Mound is located on Liddle Farm ; the farmer , Ronald Simison , had been using the mound as a quarry for road metal until he came across stone structures in 1972 .
farmer alerted Colin Renfrew who was excavating at Quanterness .
The Liddle Burnt Mound is located on Liddle Farm ; the farmer , Ronald Simison , had been using the mound as a quarry for road metal until he came across stone structures in 1972 .