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The Cave Diving Group Northern Section, UK.
Compiled and edited by Elaine Hill & Adrian Hall, 2015
Northern Sump Index 2015
Format: A4, 386 pages with numerous maps, plus an additional 12 fold-out maps.
The new 3rd edition of the Northern Sump Index has been completely re-written and updated to replace the long out-of-print 1995 edition.
|This superb new version will be essential reading for anyone with an interest in cave diving in the North of England. It is the current definitive reference work to the sumps of Northern England. This edition incorporates extensive background information such as area maps, references to dye tests and notes on hydrology. As such, this third edition of the Northern Sump Index should also prove an invaluable reference document for all non-diving cavers with an interest in the caves of Northern England.