There are pre-historic settlement finds alongside both sides of the River Wharfe and it is believed the valley has been settled at this site since the Bronze Age. There are Bronze Age carvings on rocks situated on top of The Chevin: one such example is the Knotties Stone. West Yorkshire Geology Trust has reference to Otley Chevin and Caley Crags having a rich history of human settlement stretching back into Palaeolithic times. Flint tools, Bronze Age rock carvings and Iron Age earthworks have been found. In medieval times the forest park was used as common pasture land, as a source of wood and sandstones for buildings and walls.