This international route for moving livestock to and from the mountain pastures overlooks the Angoustrine Valley and the Basse Cerdagne, with beautiful views of the Chaos de Targasonne. Starting point: The multi-sports area opposite Angoustrine church. Well worth seeing ! Sant Martí d’Envalls: An important route through the Pyrenees to the Aude valley followed the Angostrina glacial valley. A hospital (a monastery hospital) welcomed travellers here while also purifying a pagan site rich in ancestral pre-Christian beliefs. The Angoustrine spinning mill: The Angostrina spinning mill bears witness to the slow erosion of traditional customs in Cerdanya between 1870 and 1970. Originally, the inhabitants of the two parts of Cerdanya and Capcir brought their sheep's wool here. For each 1 kg of wool, they took home 900 g of yarn. By the end of the 1960s, demand had dried up and the mill closed.