evidence: India Sikkim Bhutan Map/Bhutan and Sikkim Map (Simple click to enlarge the map) [...] Bhutan Border - Indian State Sikkim [...] Sikkim is a multiethnic and multilingual state in the northeast of India and it borders Tibet Autonomous Region of China in the north, Bhutan in the east, Nepal in the west and India state of West Bengal in the south. With the second smallest but the least populated state among the Indian states, Sikkim is notable for its biodiversity and about 35% of the state is covered by the Khangchendzonga National Park.