Arche de Tortisse (2550 m), Mercantour National Park, Alpes-Maritimes, France

natural area landscape mountain rock (stone) summer sunbeam geology erosion geological formation rock hiking mineral outdoor overview backlighting day alps (range) summit alpes maritimes 06 natural arch national park mercantour national park blue sky august unusual nature natural areas ecosystem ecosystems landscapes mountains rocks (stone) summertime sunbeams ray of sunlight erosions wear (geology) geological formations geologic form geologic forms rocks trippings hike hikings tripping minerals outdoors outsides outside overviews global sight global sights full length backlightings backlit days daytime summits peak (summit) peaks (summit) mountain peak mountain peaks mountainpeak mountain top mountain tops mountaintop mountaintops alpes maritimes natural arches rock arch national parks sensitive natural areas blue skies good weather nice weather unusuals unwonted peculiar odd strange stranges naturalness area rock fragment mineral matter matter (substance) temperate season seasons ambiance sun space science earth's crust leisure shot light effect world mountain and summit landform provence alpes cote d'azur france european union europe environment protection environment management biodiversity management environment sky meteorological phenomenon meteorology