
Mark Dougherty is a professor in computer science. He started caving in 1985 and learnt to SCUBA dive in 1990. He then joined t…

Howie Artliler is an ardent traveller and writer. Most of his work appears on his blog.

Dave Clucas has been caving for over 40 years, starting near his home in Derbyshire and Yorkshire in the UK and moving further …

Greg Brick has taught geology at the college level for 5 years. He has been caving for more than 20 years, and published a 223-…