Subterranean Trailblazers
Cover story for Canadian Geographic Magazine 2012 In a world where the surface of Mars and the bottom of the oceans have been mapped out the the meter, the underground world remains, for the most part, mostly unknown. Caves are undoubtedly the last frontier of the exploration of planet Earth. Read the full story by Bruce Kirkby at: https://www.canadiangeographic.ca/article/subterranean-trailblazers