The deepest caves in Greece in order of depth are:
Cave of the Lion, Trou de Leon (in French) in the Lefka Ori mountains, Crete. Explored depth −1,110m (2008) ending in a sump but exploration of leads is ongoing.
Hellenic Speleological Society – Greece's oldest caving organisation (founded 1950)with an extensive and priceless archive of over 10,000 explored and recorded caves.
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