Kirkby Slate Quarries, formally known as Burlington Slate Quarries, are located near Kirkby-in-Furness in Cumbria, England. The quarries have produced a characteristic blue-grey slate for over 450 years, with large-scale production starting in the early 19th century, when the Cavendish family organised small-scale quarrying activities by local farmers into a larger group of quarries, which then attracted others into the area to live and work in the quarries from the 1820s onwards.