Answers are grounded in this paper and cite their sources.
We have dated a sample of red paint taken near an anthropomorphic pictograph in Elk Creek Cave in the Pryor Mountains, Montana. The radiocarbon date obtained, 840±50 years BP, is in agreement with expectations based on archaeological inforence.
No takes yet. Share an insight, caveat, or question.
Chaffee et al. (1994) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: