Chert is a fine-grained, smooth rock that has been preferred for tool production by Indigenous people in Ontario since time immemorial. Kettle Point chert was particularly desirable for knapping stone tools. At the Lawson site 85% of stone tool making debris come from this chert. The Lawson site is a fortified 16th century Indigenous site located at the confluence of Medway River and Snake Creek. The site has been known to archaeologists since the mid-1800s and is now an Ontario designated heritage site and part of the Museum of Ontario Archaeology’s grounds.