Eastern South Asia region is bounded by Nepal, Sikkim, and Bhutan in the north, Bangladesh in the east, the Indian states of Uttar Pradesh and Chhattisgarh on the west, and the Indian state of Andhra Pradesh in the south. It is connected to the Seven Sister States of Northeast India by the narrow Siliguri Corridor. West Bengal is on the eastern bottleneck of India, stretching from the Himalayas in the north, to the Bay of Bengal in the south. The region lies in the humid-subtropical zone. The landlocked region of Northeast India includes the states of Assam, Arunachal Pradesh, Bihar, Mizoram, Manipur, Meghalaya,
Ecology of the Himalayas Examples include Dehra Dun in India and Chitwan in Nepal. Himalayan subtropical broadleaf forests grow here. Also called the Mahabharat Range, the Lesser Himalayas is a prominent range high formed along the Main Boundary Thrust fault zone, with a steep southern face and gentler northern slopes. The range is nearly continuous except for river gorges, where groups of rivers from the north gather like candelabra in a handful of places to break through the range. At these elevations and above, the biogeography of the Himalayas is generally divided by the Kali Gandaki Gorge in central Nepal, one of the deepest