Two ecoregions cover portions of the Nilgiris. The South Western Ghats moist deciduous forests lie between 250 and 1000 metres' elevation. These forests extend south along the Western Ghats range to the southern tip of India, and are dominated by a diverse assemblage of trees, many of them deciduous during the winter and spring dry season. These forests are home to the largest herd of Asian elephants in India, who range from the Nilgiris across towards the Eastern Ghats. The Nilgiris and the Southwestern Ghats are also one of the most important tiger habitats left in India.