Lying on this boulder is a nodule of flint and a scatter of flint blades. Flint is one of the most important raw materials you would have used to make tools for cutting, scraping, and piercing. Using a stone or antler hammer, pieces of flint with sharp edges can be struck off. These can be used just as they are for cutting or scraping but the thin, sharp edges break and blunt quickly.

To obtain pieces of flint of a more regular size and shape, the knapper must work to a plan preparing the nodule by knocking off flakes which are wasted in order to set up a ridge which runs along the length of the nodule. This ridge will act as a guide line for the removal of long, narrow blades. As each blade is struck off, new ridges are formed for the removal of another and so a core will produce a series of blades of similar size and shape. The edges and ends of these blades are then adjusted by chipping off tiny flakes to get the right shape and angle for cutting, scraping, piercing, engraving and hafting. There is great skill in this craft.

Flint is not naturally available at Creswell Crags. People may have found flint among the stones left behind by ice sheets. One of the possible places where flint may have been found was around Nottingham. Flint could have been collected from these places as hunters moved between camps.