UIS Commission on Karst Hydrogeology and Speleogenesis
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Glossary

Glossary of Karst and Cave Terms

ascender
A mechanical device used by cavers who are either ascending or are descending through a vertical opening in a cave (e.g. vadose shaft) that uses a cam to grip a rope while downward pressure is being applied to the device [13]. See also mechanical ascender; prusiking; prusik knot.