Heading north to the village of Sore, one penetrates a little more into the soul of this natural and preserved territory. The Marais du Plata, in the heart of the Petite Leyre Valley, is one of the last witnesses of the vast expanse of marshland and deciduous groves that was the moorland before the planting of pines, with its peat bogs and rare and precious flora and fauna. In Sore, you can also visit the Porte des Anglais, a vestige of the city’s ancient fortifications in the 13th century, as well as Les Balcons de la Leyre, a path along the banks of the Petite Leyre passing by an orchard where the famous Sore apple tree, a local variety, flourishes. Leaving Sore in the direction of Moustey, the last stage of this journey, a small diversion is recommended to Pissos, where the leisure centre of Testarouman is located, on the banks of Grande Leyre, where you can practise canoeing, cycling, archery, orienteering, horse-riding or acrobatic courses in the trees.