Sponsored by: Archaeological Institute of America
Landscapers discovered the Mahaffy cache in a suburban front yard in Boulder, Colorado, in 2008. The cache includes 86 artifacts ranging from unmodified flakes to extraordinarily sophisticated bifaces, all made from raw material found far to the west of Boulder across the Rocky Mountains. Protein residue analysis indicates that tools in the cache were used on genera of animals that became extinct in North America at the end of the Ice Age, implying that people left the cache behind in Clovis times. This lecture describes the cache, discusses its implications for our understanding of Clovis ways of life, and considers evidence indicating it represents a single walk from northeastern Utah to Boulder.