It may look like just another random boulder, but this old Spanish rock bears engraved lines that could be an astounding ...

Mantle was one of the first to recognize the cultural significance of the cave and the other rock shelters in the Castle Park Region, and the need for their preservation and interpretation. In 1939 ...

2005: Reanalysis of the Basketry from Mantle's Cave, Yampa Canyon, Colorado ... University of Colorado Press, Boulder. 2006: Caches in Northeastern Utah/Northwestern Colorado. Unpublished paper ...