Here you will see a large, rounded piece of Shawangunk Conglomerate (sometimes called Shawangunk Grit) that a millstone cutter abandoned long ago. In some parts of the Shawangunks, ready access to more suitable exposures of the conglomerate bedrock made it possible to produce excellent, readily-saleable gristmill stones, an important source of income for Trapps families in the 19th century.