The national park constitutes one of Réunion's major attractions. Its mountains are a popular destination for hiking and mountaineering; there are more than of marked trails, crossing such different landscapes as rain forests, sugar cane plantations and volcanic fields. They include three long-distance trails approved by the French Hiking Federation, with mountain lodges along the trail. More than 400,000 people each year visit the Piton de la Fournaise volcano, for which a discovery trail has been established.