Karst

Greece, Peloponnese, Kalavrita, Kastria Achaea, Cave of lakes. Limestone karst cave. Upper Cretaceous.

Greece, Kefalonia, Mellisani Lake. Karst failure. Limestone - Upper Cretaceous. 

Greece, Kefalonia, Drogarati cave. Karst cave with stalactites and stalgmites. Limestone - Upper Cretaceous. Stalctites and stalagmites - Quaternary?

Sardinia, Cala Luna. Upper Jurassic succession of Easern Sardinia. Karst cave in the gorge wall. Bioclastic limestones, oolitic cherty limestones and mudstones, of littoral-cricalittoral environment, with algae, benthic foraminifer and nerineids. Alternatively: Dogger-Malm.