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

agia marina turquoise water southern greece petrified forest beach geopark geological formations clear sky coastal view scenic landscape nature travel summer vacation outdoor adventure beautiful coastline relaxation sunshine tranquil marine life historical site heritage tourism getaway natural beauty rugged terrain rocky shore crystal warm climate exploration hiking cliffs local flora