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

agia marina agios nikolaos geopark beach turquoise water south greece petrified forest rocky coastline natural beauty scenic views clear outdoor activities summer travel tourism relaxation landscape nature hiking adventure swimming exploration seascape geological formations mediterranean sunshine peaceful marine life snorkeling sandy stunning scenery coastal escape tranquility wildlife sunlight colors picturesque