A county in the East Midlands of England. A substantial portion of the Peak District National Park lies within Derbyshire. The northern part of Derbyshire overlaps with the Pennines, a famous chain of hills and mountains. The county contains within its boundary of approx. 225 miles, part of the National Forest, and borders on Greater Manchester to the North West, West Yorkshire to the North, South Yorkshire to the North East, Nottinghamshire to the East, Leicestershire to the South East, Staffordshire to the West and South West and Cheshire also to the West.