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

agia marina petrified forest turquoise water southern greece beach natural landscape rocky shoreline clear geological formations coast nature outdoors hiking summer tourism travel scenic view mountains sea relaxation sunlight marine life archaeological biodiversity blue sky horizon coastal beauty ecology tranquility adventure cliffs vegetation crystal geology historic site wild scenery picturesque