Waltham, Tony
From Ukcaving.com wiki
Tony Waltham is a geologist, lecturer, author and travel guide with a long profile of writing and illustrating books, magazines, travel features and textbooks of geography and geology.
Source:
A short bibliography:
http://www.amazon.co.uk/s?ie=UTF8&search-type=ss&index=books-uk&field-author=Tony%20Waltham&page=1
