Heathland is the result of centuries of use as common land. Over time, human activities deplete the soil of nutrients and create a range of habitats, including grassland, bogs, open heath and woodland. In North Lincolnshire, heath can mainly be found on the coversands, wind-blown sand deposits laid down as the glaciers retreated. Around 80% of lowland heath has been lost in the last 200 years. This is due to a combination of destruction and changes in land use. There are still a few protected sites around Scunthorpe, including Atkinson’s Warren, Conesby Quarry and Risby Warren, which provide valuable refuges for wildlife. These sites must be regularly managed to maintain the heathland habitat.