 It is metamorphosed from Devonian micritic limestones or mudstones which were predominantly red and homogeneous but had Stromatactis cavities subsequently infilled with white calcite.These outcrops hold large workable volumes of marble, some over 15 metres in height.Quarrying has been undertaken in the vicinity of Caunes since at least the seventeenth century although there is some reasonable expectation that small quarries were exploited in Roman times.