A drone flight over the impressive sand dunes of Pilat that form a part of the coast of the Arcachon Bay, West of Bordeaux in France. The dune is 104 meters at its highest point and is a natural wonder that has fascinated humans for millennia with archaeological artifacts still revealing mysteries of the activities here ranging from sea salt refining to pottery production.
The dunes are shaped mostly due to currents from the Atlantic depositing sand in waves as can be seen stretching out toward the ocean, with wind assisting in the movement of the sane dunes inward from the coast where it meets a forest and thus piles up.
The explanation as to how such a large volume of sand can be deposited so neatly in one place is still debated however geologists mostly agree the sand from the dune was created millions of years when the Pyrénées Mountains to the south and the Central Massif Mountains to the east eroded. Local rivers carried sand from the mountains to the ocean where it drifted ashore and created the massive dune.
Moreover, much like the entire straight sandy coast of the Landes, was formed at the end of the Holocene post-glacial transgression, around 6000 years ago, when the sea level stabilized at its current level. this exposed a lot of sand which would otherwise be still underwater.