" Grima explained that the primary tool in establishing Malta's prehistoric chronology had been radiocarbon-dating (based on the rate of decay of C-14 stored in all formerly living matter). My views about C-14 are on the record. I think it should be only one amongst several tools and techniques brought to bear on the dating of megalithic or rock-hewn sites. It is a truism, but worth repeating nevertheless, that C-14 cannot date stone -- only such organic materials as are found around or in association with stone ruins. It is an assumption (more or less safe depending on the stratigraphy and general circumstances of the site but still, at the end of the day, an assumption) that organic materials found close to megalith B or trilithon A or dolmen C, etc., do in fact date from the same period as the quarrying and erection of the megaliths concerned. "

― Graham Hancock , Underworld: The Mysterious Origins of Civilization