SOME AWESOME LINKS

When you click on the picture it will lead you to our friends

Pedro Hernandez ,
specialist in cave entrance photographing

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Vulcanospeleology: photography in a harsh environment
By Christopher Binding and Mark Burkey. A Youtube film

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One off the best Photographers ever:
Mark Burkey  on Flickr.com
An overview of best pictures in lavatubes Lanzarote