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

petrified forest agia marina agios nikolaos beach turquoise water southern greece nature relaxation coastline rocks scenery landscape vacation summer travel geological formations clear sandy exploration outdoor serenity seashore sunlight natural beauty marine life sea hiking wildlife park picturesque sunny day sky coastal view tranquil scenic peaceful seascape tourist destination adventure