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

agios nikolaos beach blue sky clear water coast crete geological formations greece mountains nature outdoor peaceful rock scenic shoreline sun tourism travel vacation warm weather activities waves wilderness zen adventure explore relax serene seaside picturesque view cliffs environment geology landscape marine natural beauty turquoise destination beachfront summer coastal retreat tranquil