This cache of eight bifaces represents approximately half of the cache that was exposed during the plowing of a field in Doniphan County and donated to the Kansas Historical Society in 2002. A cache is a group of items stored hidden for future use. Six of the bifaces were made of Smoky Hill silicified chalk, a chert that outcrops in western and north central Kansas and other states. The other two were made of Permian chert, which outcrops in the Flint Hills region of Kansas and Oklahoma.