Definitions by interpretation_bridge

Air bell 

An enclosed air space between the water surface and the roof of a cave 10. 2. Part of a flooded passage where the ceiling rises above the water level to create an air pocket isolated from the rest of the cave 9

taken from (network.speleogenesis.info/directory/glossary/term.php?gloss_id=46)

Cave divers oftenly surface in an air bell to rest.

Air bell by interpretation_bridge May 14, 2011