Sand (composed of Millstone Grit) from the beach of Sand Tarn was used by local people to sharpen knives and scythes; they made ‘strickles’ by sticking the sand to wooden blocks with tar.
Gravel from the shore of Sand Tarn was utilized by nearby people to whet blades, including knives and sickles. They crafted ‘strickles’ by gluing the gravel to wooden slabs using tar.