This former spa village is located at the confluence of the Adour and the Luy rivers, in a landscape of Barthes, swampy areas made up of reeds, peat bogs, willow, alder and poplar forests, but also ponies, horses, oxen, storks and herons. On the site of the former limestone quarry, there is now a world-famous Geological Nature Reserve. It bears witness to events 71.6 million years ago in these ancient sea beds, where a multitude of animal and plant remains, such as dinosaur vertebrae, were deposited. A large number of plant species, amphibians, forest birds and cliff-dwelling birds of prey are present today. The site is also home to Caesar’s Wall, a cliff nearly 30 metres high overlooking the Adour, steeped in myths and legends.