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.
Otley is a market town and civil parish at a bridging point on the River Wharfe in the City of Leeds metropolitan borough in West Yorkshire, England.
Historically a part of the West Riding of Yorkshire, the population was 13,668 at the 2011 census.
Since local government reorganisation in 1974 Otley has been a civil parish in the metropolitan borough of the City of Leeds, in the county of West Yorkshire.
Later woolcombing and worsted spinning were introduced.
In medieval times the forest park was used as common pasture land, as a source of wood and sandstones for buildings and walls.
The majority of the early development of the town dates from Saxon times and was part of an extensive manor granted by King Athelstan to the see of York.
This began to create the layout of today, As well as farming and use of woodland, important local activities were quarrying stone, and the manufacture of potash from bracken, used to make a soap which therefore supported a community carrying out fulling, the cleansing and finishing of woollen cloth on Watergate.
The woollen industry developed as a cottage industry but during the Industrial Revolution and the mechanisation of the textile industry, mills were built using water then steam power.