By our definition, rock art can only be made where there are bedrock outcrops or at least large exposed boulders.
Such conditions are found throughout the Ozark and Ouachita mountain regions of Arkansas and in the intervening Arkansas River Valley.
Levchenko, who supervised the radiocarbon dating, collaborated with lead author of the paper, Ms Tristen Jones, a Ph D candidate at the Australian National University (ANU) and co-authors from ANU.
Generally speaking, radiocarbon dating cannot readily be used to date Australian indigenous rock art directly, because it is characterised by the use of ochre, an inorganic mineral pigment that contains no carbon.
Rock Art can be “interpreted” in many ways, including by modern artists and spiritual practitioners with purposes which may have either a lot or very little to do with the reasons it was produced long ago.