Map Page 1123 Area 25,332 square mile (65,610 square kilometer) Population 19,742,439 Capital Colombo Highest Point 8,280 foot (2,524 meter) Lowest Point 0 m GDP per capita $3,700 Primary Natural Resources limestone, graphite, mineral sands.
GEOLOGICALLY, THE ISLAND of Sri Lanka is considered a southerly extension of peninsular India’s Deccan region and was clearly part of the peninsula all through the last Ice Age. The pear-shaped island is approximately 140 mile (225 kilometer) across at its widest point and about 270 mile (435 kilometer) long and lies just 7 degrees north of the equator. The narrow northern end of the island is almost linked to southeastern India by a chain of limestone shoals known as Adam’s Bridge. Most of the island is flat or gently rolling terrain, although there is a mountainous section in the southcentral part of the country known as the Central Highlands that occupies most of the heart of the country. The highland landscape is highly dissected with a unique arrangement of plateaus, ridges, escarpments, intermontane basins, and valleys. There are also a series of spectacular escarpments such as World’s End, a near-vertical precipice of about 4,000 foot (1,219 meter).
RIDGES AND VALLEYS Surrounding this highland is a interestingly diverse plain with elevations ranging from sea level to about 1,000 foot (300 meter). To the north and northeast of the highlands, low ridges decrease in altitude as 1 moves toward the coast, traversing the plain. The western and southwestern parts of the plain feature alternating ridges and valleys that generally run parallel to the coast and increase in elevation toward the interior until they merge imperceptibly with the highland mass. In the remaining parts of the plain, rocky buttes and mounds, some of which reach elevations of more than 1,000 foot (305 meter) sporadically interrupt an otherwise flat horizon. Surrounding the plain is a coastal zone consisting mostly of sandy beaches, spits, and lagoons. Over a few stretches of the coast there are rocky promontories and cliffs, deep-water bays, and offshore islets. Sri Lanka’s tropical location ensures perennially high temperatures, with monthly averages of 90 degrees F (32 degrees C) common in the lowlands. Despite its location just north of the equator, the higher altitudes of the Central Highlands account for surprisingly lower temperatures, where monthly averages can range between 44 degrees F (7 degrees C) and 71 degrees F (22 degrees C). Rainfall is the conspicuous factor in the seasonal and diurnal variations of Sri Lanka’s monsoon climate. Most parts of the country receive more than 50 inch (127 centimeter) of rain per year. However, regional differences created by Sri Lanka’s geography have created distinctive wet and dry zones. The wet zone covers the southwestern part of the island including the highlands. The rest of the island constitutes a relative dry zone, where droughts are common and can persist for 3 months or more. Today, the capital is at Sri Jayewardenapura Kotte. Colombo, the former capital (and still the site of many government offices), remains as the commercial capital and the country’s largest city. The island has a moderate supply of minerals, but has become known more recently as 1 of the world’s major suppliers of black tea.