Morne Trois Pitons National Park stretches across the southern half of the island. Emerald Pool Visitor Center is 14 mi. (23 km) n.e. on Canefield-Castle Bruce Rd. to Pond Casse-Rosalie Rd. Covering 17,000 acres (6,880 hectares), Morne Trois Pitons is the first natural heritage site in the Eastern Caribbean and only the second in the insular Caribbean to be listed as a UNESCO World Heritage Site.
The park centers around the volcanic “mountain of three peaks” with its steaming vents, fumaroles and hot springs. Boiling Lake is said to be the second largest of its kind in the world. Bubbling mud pots and sulfur vents mark the barren Valley of Desolation, where the sulfuric fumes have destroyed all vegetation. At TiTou Gorge, visitors can swim in hot-water springs.
At 300 feet (91 m), Middleham Falls is the highest waterfall in the park. Emerald Pool, a short walk from the visitor center, is a popular destination for cruise ship excursions. The twin torrents at nearby Trafalgar Falls in Roseau Valley offer an ideal setting for a picnic within reach of wild orchids and tropical rain forests. The 150-foot Sari Sari Falls can be reached via a 45-minute hike from La Plaine.
A qualified guide must be hired for the 8-mile (13-km) hike to Boiling Lake. Hikers should wear sturdy shoes and raingear and protect cameras from moisture.