These bifaces were collected from Morris County and donated to the Kansas Historical Society in 1980. They are made of local chert from the Flint Hills region. Bifaces like these could have been used as a chopping tool or a blank intended to be turned into a specific tool at a later date. Munkers Creek sites often contain similar large, crude bifaces, but such artifacts are also found in other places and times. The Munkers Creek phase describes a stone tool technology restricted primarily to the Flint Hills. During this time most of North America was in a prolonged drought so severe that some archeologists thought people left the Plains. Munkers Creek artifacts show that people stayed, but they had to adapt by using many different types of animals and plants for food in a less productive environment.