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Afghanistan is a landlocked mountainous country located within South Asia and Central Asia. The country is the 41st largest in the world in size. Kabul is the capital and largest city of Afghanistan, located in the Kabul Province. Strategically located at the crossroads of major trade routes, Afghanistan has attracted a succession of invaders since the sixth century BCE. The Hindu Kush mountains, running northeast to southwest across the country, divide it into three major regions: 1) the Central Highlands, which form part of the Himalayas and account for roughly two thirds of the country's area; 2) the Southwestern Plateau, which accounts for one-fourth of the land; and 3) the smaller Northern Plains area, which contains the country's most fertile soil. Land elevations generally slope from northeast to southwest, following the general shape of the Hindu Kush massif, from its highest point in the Pamir Mountains near the Chinese border to the lower elevations near the border with Iran. To the north, west, and southwest there are no mountain barriers to neighboring countries. The northern plains pass almost imperceptibly into the plains of Turkmenistan. In the west and southwest, the plateaus and deserts merge into those of Iran. Afghanistan is located on the Eurasian Tectonic Plate. The Wakhan Corridor and the rest of northeastern Afghanistan, including Kabul, are situated in a geologically active area. Over a dozen earthquakes occurred there during the twentieth century. The greater part of the northern border and a small section of the border with Pakistan are marked by rivers; the remaining boundary lines are political rather than natural. The northern frontier extends approximately southwestward, from the Pamir Mountains in the northeast to a region of hills and deserts in the west, at the border with Iran. The border with Iran runs generally southward from the Hari River across swamp and desert regions before reaching the northwestern tip of Pakistan. Its southern section crosses the Helmand River. Afghanistan is bounded by six different countries. Its longest border is the poorly marked Durand Line, accounting for its entire southern and eastern boundary with Pakistan. The shortest one, bordering China's Xinjiang province, is a mere at the end of the Wakhan Corridor (the Afghan Panhandle), a narrow sliver of land long that extends eastward between Tajikistan and Pakistan. At its narrowest point it is only wide. The border with Pakistan runs eastward from Iran through the Chagai Hills and the southern end of the Registan Desert, then northward through mountainous country. It then follows an irregular northeasterly course before reaching the Durand Line, established in 1893. This line continues on through mountainous regions to the Khyber Pass area. Beyond this point it rises to the crest of the Hindu Kush, which it follows eastward to the Pamir Mountains. The Durand Line divides the Pashtun tribes of the region between Afghanistan and Pakistan. Its creation has caused much dissatisfaction among Afghans and has given rise to political tensions between the two countries. ==Climate== In Afghanistan, climate is very cold in winters, and normal in summer. In the summer, temperature reaches about 25-35 °C here is no great difference between the mean temperature of Afghanistan and that of the lower Himalaya. The lowest temperature record is -67 °C in northern and highest record is 49.0 °C record in 1997. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Geography of Afghanistan」の詳細全文を読む スポンサード リンク
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