Known as "The Nature Island of the Caribbean" due to its lush scenery and varied flora and fauna, Dominica is largely covered by rainforest and is home to the world's second-largest hot spring, Boiling Lake. Within its borders lie two ecoregions: Windward Islands moist forests and Windward Islands xeric scrub. The most mountainous of the Lesser Antilles, its volcanic peaks are cones of lava craters, the largest of these being (north-to-south) Morne aux Diables, Morne Diablotins (the highest on the island at 1,447 m), Morne Trois Pitons and Morne Anglais. Morne Trois Pitons National Park is a tropical forest blended with volcanic features; it was recognised as a World Heritage Site on 4 April 1995, a distinction it shares with four other Caribbean islands. The Calibishie area in the country's northeast has sandy beaches. Some plants and animals thought to be extinct on surrounding islands can still be found in Dominica's forests. The island has several protected areas, including Cabrits National Park, as well as 365 rivers. For a few years the government sought to encourage the island as an ecotourism destination, although the hurricane of 2017 has since changed these plans. The country had a 2018 Forest Landscape Integrity Index mean score of 1.06/10, ranking it 166th globally out of 172 countries.