Julie Francis and Lawrence Loendorf contend that Native Americans, past and present, hold traditional knowledge that is central to an understanding of these images. By combining the ethnographic record with consultation of traditional leaders in modern Native communities, they offer compelling evidence that highly complex belief systems and religious experience form the context for the vast majority of petroglyphs and pictographs in the region.

The authors also show how this ancient imagery can be integrated with the archaeological record. Modern advances in rock-art dating techniques allow them to begin the process of incorporating image styles with archaeological chronologies. The result is a new approach that offers a much different archaeological picture of the ancient Bighorn and Wind River basins.