“Deep Caves; The Crystal of the Devil”

“The Crystal of the Devil” Carpets pungent, jellyfish and even petrified … sword in the stone. They are hidden in caves surprising, secret worlds that only the cavers, sometimes only the bravest, they can see. Max Wisshak is one of them. His specialty is the study of Karbonatkreislaufs, the world’s oceans. Caves are his great […]