melissani cave with autumn colors. famous melissani lake on kefalonia island, karavomylos, greece. on top of melissani cave (

melissani cave greece lake kefalonia nature water cavern island sea geology boat hole cephalonia greek destination travel underground drogarati speleology blue autumn nymph landscape mediterranean fall ionian landmark pagan famous vacation archaeologica sweet melisani mellisani place cefalonia islands panas sami seacave turquoise colored drone point of view