[ 19 marzo 2007 08:00 a 23 marzo 2007 22:00. ] The Speleological School – an international meeting established few years after discovery of the Niedźwiedzia (Bear) Cave in Kletno has been traditional talking stop for karst and cave scientists. A 30 year long history and 24 editions of the Speleological School are inextricably linked with the name of its founder and scientific director – Professor [...]