The terrain of the islands is a mixture of mountains and plains. On Trinidad the Northern Range runs parallel with the north coast, and contains the country's highest peak (El Cerro del Aripo), which is  above sea level, and second highest (El Tucuche, ). The rest of the island is generally flatter, excluding the Central Range and Montserrat Hills in the centre of the island and the Southern Range and Trinity Hills in the south. The three mountain ranges determine the drainage pattern of Trinidad. The east coast is noted for its beaches, most notably Manzanilla Beach. The island contains several large swamp areas, such as the Caroni Swamp and the Nariva Swamp. Major bodies of water on Trinidad include the Hollis Reservoir, Navet Reservoir, Caroni Reservoir.  Trinidad is made up of a variety of soil types, the majority being fine sands and heavy clays. The alluvial valleys of the Northern Range and the soils of the East–West Corridor are the most fertile. Trinidad is also notable for containing Pitch Lake, the largest natural reservoir of asphalt in the world. Tobago contains a flat plain in its south-west, with the eastern half of the island being more mountainous, culminating in Pigeon Peak, the island's highest point at . Tobago also contains several coral reefs off its coast.