The region of great forests is located on the eastern side of the country. Rainforests are found in the Río San Juan Department and in the autonomous regions of RAAN and RAAS. This biome groups together the greatest biodiversity in the country and is largely protected by the Indio Maíz Biological Reserve in the south and the Bosawás Biosphere Reserve in the north. The Nicaraguan jungles, which represent about , are considered the lungs of Central America and comprise the second largest-sized rainforest of the Americas.