http://www.richardaldred.com/files/gimgs/5_richardaldredunderground01.jpg
Fluorite mine, Wales
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground02.jpg
Culvert, Manchester
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground03.jpg
Culvert, Manchester
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground04.jpg
Fluorite mine, Wales
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground05.jpg
Culvert, Manchester
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground06.jpg
Penstock controls, Manchester
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground07.jpg
Fluorite mine, Derbyshire
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground08.jpg
Fluorite mine, Wales
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground09.jpg
Storm drain, Cheshire
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground10.jpg
Storm drain, Cheshire
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground11.jpg
Limestone mine, Derbyshire
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground12.jpg
Culvert, Manchester
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground13.jpg
Culvert, Manchester
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground14.jpg
Limestone mine, Derbyshire
http://www.richardaldred.com/files/gimgs/5_richardaldredunderground15.jpg
Limestone mine, Derbyshire