Robbie has a 2 page article in the November Geographical magazine under Geo-Photographer. Entitled Depth of Vision. Sadly they don't seem to have that section on-line.
It is a great place to loose yourself down numerus 'rabbit holes' though Geographical
It features several of his wonderful photos which can be seen in his (first) book, Hidden Worlds.
Looks like another Christmas present sorted
Thanks Robbie 
Kozu Books (UK) – direct individual sales from the publisher and group or bulk orders
Speleobooks (USA)
Speleo Concepts (EU)
It is a great place to loose yourself down numerus 'rabbit holes' though Geographical
It features several of his wonderful photos which can be seen in his (first) book, Hidden Worlds.
Looks like another Christmas present sorted



Kozu Books (UK) – direct individual sales from the publisher and group or bulk orders
Speleobooks (USA)
Speleo Concepts (EU)