Erewash Trent Devon Soar
Bassetlaw Newark and Sherwood Nottingham Gedling
Broxtowe Mansfield Ashfield Rushcliffe
204 metres 64 metres 404 metres 604 metres
730 000 333 000 1 530 000 1 030 000
Liverpool Bristol Hull Southampton
Gordale Scar Steam Gorge Wye Dale Creswell Crags
Sand pits Clay pits Castles Coal mines
800 - 1000 yrs 100-200 yrs 2000 yrs plus 400 600 yrs