Petrified forest, Agia Marina, Agios Nikolaos Geopark, beach with turquoise water in the south of Greece, Greece

agia marina turquiose water beach petrified forest agios nikolaos geopark greece southern coastal rocks nature tranquility outdoor landscape seashore sunny day holiday pristine relaxation exploration geological formations scenic views adventure biodiversity travel clear sea hiking marine life summer vacation peace blue sky coastline unique tourist destination crystal rock culture natural