Projects 2001 Welcome to the web page about the setting of the European cave penetration record that took place August 9th 2001 by a pan-European team of divers. All dives were directed using the DIR-philosophy developed by the Floridian cave diving team WKPP. The concept of using redundant rebreathers for cave diving was originally introduced by Olivier Isler with his RI 2000. Read more by clicking the button for full project reports.