Nepal measures about 800 kilometers (497 mi) along its Himalayan axis by 150 to 250 kilometers (93 to 155 mi) across. Nepal has an area of 147,181 square kilometers (56,827 sq mi).
Nepal is landlocked by India on three sides and China’s Tibet Autonomous Region to the north. West Bengal’s narrow Siliguri Corridor or Chicken’s Neck separate Nepal and Bangladesh. To the east are Inde and Bhutan. Nepal depends on India for goods transport facilities and access to the sea, even for most goods imported from China. For a small country, Nepal has tremendous geographic diversity. It rises from as low as 59 metres (194 ft) elevation in the tropical Terai—the northern rim of the Gangetic Plain, beyond the perpetual snow line to some 90 peaks over 7,000 metres (22,966 ft) including Earth’s highest 8,848 metres (29,029 ft) Mount Everest or Sagarmatha. In addition to the continuum from tropical warmth to cold comparable to polar regions, average annual precipitation varies from as little as 160 millimetres (6.3 in) in the rainshadow north of the Himalaya to as much as 5,500 millimetres (216.5 in) on windward slopes