The CIA World Factbook Edition 1990 Geography

Terrain In 36 editions of 36.

Terrain was published in 36 editions of the CIA World Factbook, from 1990 to 2025. The 1990 edition carries it in 249 entries, in its Geography section. Every entry is shown as that edition published it.

entries in the 1990 edition
249
the first edition with it
1990
the latest edition with it
2025

Published as “Terrain” (1990 to 2025).

the entry has the field in that editionnot in that editionthe open editionEach entry below ends in its editions with Terrain, 1990 to 2025. Point at a year above to follow it down; choose one in a row to read that edition’s text there.

Entries with Terrain in each edition

19902000201020202025

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World

1 entry

World

  • highest elevation is Mt. Everest at 8,848 meters and lowest elevation is the Dead Sea at 392 meters below sea level;
  • greatest ocean depth is the Marianas Trench at 10,924 meters

Africa

61 entries

Algeria

  • mostly high plateau and desert;
  • some mountains;
  • narrow, discontinuous coastal plain

Angola

narrow coastal plain rises abruptly to vast interior plateau

Bassas da India

a volcanic rock 2.4 m high

Benin

mostly flat to undulating plain; some hills and low mountains

Botswana

predominately flat to gently rolling tableland; Kalahari Desert in southwest

Burkina now Burkina Faso

mostly flat to dissected, undulating plains; hills in west and southeast

Burundi

mostly rolling to hilly highland; some plains

Cape Verde now Cabo Verde

  • steep,
  • rugged,
  • rocky,
  • volcanic

Cameroon

  • diverse with coastal plain in southwest,
  • dissected plateau in center,
  • mountains in west,
  • plains in north

Central African Republic

  • vast,
  • flat to rolling,
  • monotonous plateau;
  • scattered hills in northeast and southwest

Chad

  • broad,
  • arid plains in center,
  • desert in north,
  • mountains in northwest,
  • lowlands in south

Comoros

volcanic islands, interiors vary from steep mountains to low hills

Zaire now Democratic Republic of the Congo

vast central basin is a low-lying plateau; mountains in east

Congo now Republic of the Congo

  • coastal plain,
  • southern basin,
  • central plateau,
  • northern basin

Ivory Coast now Cote d'Ivoire

mostly flat to undulating plains; mountains in northwest

Djibouti

coastal plain and plateau separated by central mountains

Egypt

vast desert plateau interrupted by Nile valley and delta

Equatorial Guinea

coastal plains rise to interior hills; islands are volcanic

Swaziland now Eswatini

mostly mountains and hills; some moderately sloping plains

Ethiopia

high plateau with central mountain range divided by Great Rift Valley

Europa Island

NA

Gabon

  • narrow coastal plain;
  • hilly interior;
  • savanna in east and south

The Gambia

flood plain of the Gambia River flanked by some low hills

Ghana

mostly low plains with dissected plateau in south-central area

Glorioso Islands

undetermined

Guinea

generally flat coastal plain, hilly to mountainous interior

Guinea-Bissau

mostly low coastal plain rising to savanna in east

Juan de Nova Island

undetermined

Kenya

low plains rise to central highlands bisected by Great Rift Valley; fertile plateau in west

Lesotho

mostly highland with some plateaus, hills, and mountains

Liberia

mostly flat to rolling coastal plains rising to rolling plateau and low mountains in northeast

Libya

  • mostly barren,
  • flat to undulating plains,
  • plateaus,
  • depressions

Madagascar

narrow coastal plain, high plateau and mountains in center

Malawi

  • narrow elongated plateau with rolling plains,
  • rounded hills,
  • some mountains

Mali

mostly flat to rolling northern plains covered by sand; savanna in south, rugged hills in northeast

Mauritania

mostly barren, flat plains of the Sahara; some central hills

Mauritius

small coastal plain rising to discontinuous mountains encircling central plateau

Mayotte

generally undulating with ancient volcanic peaks, deep ravines

Morocco

mostly mountains with rich coastal plains

Mozambique

  • mostly coastal lowlands,
  • uplands in center,
  • high plateaus in northwest,
  • mountains in west

Namibia

  • mostly high plateau;
  • Namib Desert along coast;
  • Kalahari Desert in east

Niger

  • predominately desert plains and sand dunes;
  • flat to rolling plains in south;
  • hills in north

Nigeria

southern lowlands merge into central hills and plateaus; mountains in southeast, plains in north

Reunion

mostly rugged and mountainous; fertile lowlands along coast

Rwanda

mostly grassy uplands and hills; mountains in west

St. Helena now Saint Helena, Ascension, and Tristan da Cunha

rugged, volcanic; small scattered plateaus and plains

Sao Tome and Principe

volcanic, mountainous

Senegal

  • generally low,
  • rolling,
  • plains rising to foothills in southeast

Seychelles

  • Mahe Group is granitic,
  • narrow coastal strip,
  • rocky,
  • hilly;
  • others are coral,
  • flat,
  • elevated reefs

Sierra Leone

  • coastal belt of mangrove swamps,
  • wooded hill country,
  • upland plateau,
  • mountains in east

Somalia

mostly flat to undulating plateau rising to hills in north

South Africa

vast interior plateau rimmed by rugged hills and narrow coastal plain

Sudan

generally flat, featureless plain; mountains in east and west

Tanzania

  • plains along coast;
  • central plateau;
  • highlands in north, south

Togo

  • gently rolling savanna in north;
  • central hills;
  • southern plateau;
  • low coastal plain with extensive lagoons and marshes

Tromelin Island

sandy

Tunisia

  • mountains in north;
  • hot, dry central plain;
  • semiarid south merges into the Sahara

Uganda

mostly plateau with rim of mountains

Western Sahara

mostly low, flat desert with large areas of rocky or sandy surfaces rising to small mountains in south and northeast

Zambia

mostly high plateau with some hills and mountains

Zimbabwe

mostly high plateau with higher central plateau (high veld); mountains in east

Antarctic Region

5 entries

Antarctica

  • about 98% thick continental ice sheet, with average elevations between 2,000 and 4,000 meters;
  • mountain ranges up to 5,000 meters high;
  • ice-free coastal areas include parts of southern Victoria Land, Wilkes Land, and the scientific research areas of Graham Land and Ross Island on McMurdo Sound;
  • glaciers form ice shelves along about half of coastline

Bouvet Island

  • volcanic;
  • maximum elevation about 800 meters;
  • coast is mostly inacessible

French Southern and Antarctic Lands

volcanic

Heard Island and McDonald Islands

Heard Island--bleak and mountainous, with an extinct volcano; McDonald Islands--small and rocky

South Georgia and the South Sandwich Islands

  • most of the islands, rising steeply from the sea, are rugged and mountainous;
  • South Georgia is largely barren and has steep, glacier-covered mountains;
  • the South Sandwich Islands are of volcanic origin with some active volcanoes

Arctic Region

4 entries

Greenland

  • flat to gradually sloping icecap covers all but a narrow,
  • mountainous,
  • barren,
  • rocky coast

Iceland

mostly plateau interspersed with mountain peaks, icefields; coast deeply indented by bays and fiords

Jan Mayen

volcanic island, partly covered by glaciers; Beerenberg is the highest peak, with an elevation of 2,277 meters

Svalbard

  • wild, rugged mountains;
  • much of high land ice covered;
  • west coast clear of ice about half the year;
  • fjords along west and north coasts

Asia

14 entries

Afghanistan

mostly rugged mountains; plains in north and southwest

Bangladesh

mostly flat alluvial plain; hilly in southeast

Bhutan

mostly mountainous with some fertile valleys and savanna

British Indian Ocean Territory

flat and low (up to 4 meters in elevation)

China

mostly mountains, high plateaus, deserts in west; plains, deltas, and hills in east

India

  • upland plain (Deccan Plateau) in south,
  • flat to rolling plain along the Ganges,
  • deserts in west,
  • Himalayas in north

Japan

mostly rugged and mountainous

Korea, North now North Korea

  • mostly hills and mountains separated by deep,
  • narrow valleys;
  • coastal plains wide in west,
  • discontinuous in east

Korea, South now South Korea

mostly hills and mountains; wide coastal plains in west and south

Maldives

flat with elevations only as high as 2.5 meters

Mongolia

  • vast semidesert and desert plains;
  • mountains in west and southwest;
  • Gobi Desert in southeast

Nepal

  • Tarai or flat river plain of the Ganges in south,
  • central hill region,
  • rugged Himalayas in north

Pakistan

  • flat Indus plain in east;
  • mountains in north and northwest;
  • Balochistan plateau in west

Sri Lanka

mostly low, flat to rolling plain; mountains in south-central interior

Central America and the Caribbean

32 entries

Anguilla

flat and low-lying island of coral and limestone

Antigua and Barbuda

mostly low-lying limestone and coral islands with some higher volcanic areas

Aruba

flat with a few hills; scant vegetation

The Bahamas

long, flat coral formations with some low rounded hills

Barbados

relatively flat; rises gently to central highland region

Belize

flat, swampy coastal plain; low mountains in south

British Virgin Islands

coral islands relatively flat; volcanic islands steep, hilly

Cayman Islands

low-lying limestone base surrounded by coral reefs

Costa Rica

coastal plains separated by rugged mountains

Cuba

mostly flat to rolling plains with rugged hills and mountains in the southeast

Dominica

rugged mountains of volcanic origin

Dominican Republic

rugged highlands and mountains with fertile valleys interspersed

El Salvador

mostly mountains with narrow coastal belt and central plateau

Grenada

volcanic in origin with central mountains

Guadeloupe

Basse-Terre is volcanic in origin with interior mountains; Grand-Terre is low limestone formation

Guatemala

mostly mountains with narrow coastal plains and rolling limestone plateau (Peten)

Haiti

mostly rough and mountainous

Honduras

mostly mountains in interior, narrow coastal plains

Jamaica

mostly mountains with narrow, discontinuous coastal plain

Martinique

mountainous with indented coastline; dormant volcano

Montserrat

  • volcanic islands,
  • mostly mountainous,
  • with small coastal lowland

Navassa Island

raised coral and limestone plateau, flat to undulating; ringed by vertical white cliffs (9 to 15 meters high)

Netherlands Antilles

generally hilly, volcanic interiors

Nicaragua

extensive Atlantic coastal plains rising to central interior mountains; narrow Pacific coastal plain interrupted by volcanoes

Panama

  • interior mostly steep,
  • rugged mountains and dissected,
  • upland plains;
  • coastal areas largely plains and rolling hills

Puerto Rico

mostly mountains with coastal plain belt in north; mountains precipitous to sea on west coast

St. Kitts and Nevis now Saint Kitts and Nevis

volcanic with mountainous interiors

St. Lucia now Saint Lucia

volcanic and mountainous with some broad, fertile valleys

St. Vincent and the Grenadines now Saint Vincent and the Grenadines

volcanic, mountainous; Soufriere volcano on the island of St. Vincent

Trinidad and Tobago

mostly plains with some hills and low mountains

Turks and Caicos Islands

low, flat limestone; extensive marshes and mangrove swamps

Virgin Islands

mostly hilly to rugged and mountainous with little level land

Europe

37 entries

Albania

mostly mountains and hills; small plains along coast

Andorra

rugged mountains dissected by narrow valleys

Austria

mostly mountains with Alps in west and south; mostly flat, with gentle slopes along eastern and northern margins

Belgium

  • flat coastal plains in northwest,
  • central rolling hills,
  • rugged mountains of Ardennes Forest in southeast

Bulgaria

mostly mountains with lowlands in north and south

Czechoslovakia

mixture of hills and mountains separated by plains and basins

Denmark

low and flat to gently rolling plains

Faroe Islands

  • rugged,
  • rocky,
  • some low peaks;
  • cliffs along most of coast

Finland

mostly low, flat to rolling plains interspersed with lakes and low hills

France

mostly flat plains or gently rolling hills in north and west; remainder is mountainous, especially Pyrenees in south, Alps in east

German Democratic Republic

mostly flat plain with hills and mountains in south

Germany, Federal Republic of now Germany

  • lowlands in north,
  • uplands in center,
  • Bavarian Alps in south

Gibraltar

a narrow coastal lowland borders The Rock

Greece

mostly mountains with ranges extending into sea as peninsulas or chains of islands

Guernsey

mostly level with low hills in southwest

Vatican City now Holy See (Vatican City)

low hill

Hungary

mostly flat to rolling plains

Ireland

mostly level to rolling interior plain surrounded by rugged hills and low mountains; sea cliffs on west coast

Man, Isle of now Isle of Man

hills in north and south bisected by central valley

Italy

mostly rugged and mountainous; some plains, coastal lowlands

Jersey

gently rolling plain with low, rugged hills along north coast

Liechtenstein

mostly mountainous (Alps) with Rhine Valley in western third

Luxembourg

  • mostly gently rolling uplands with broad, shallow valleys;
  • uplands to slightly mountainous in the north;
  • steep slope down to Moselle floodplain in the southeast

Malta

  • mostly low,
  • rocky,
  • flat to dissected plains;
  • many coastal cliffs

Monaco

  • hilly,
  • rugged,
  • rocky

Netherlands

mostly coastal lowland and reclaimed land (polders); some hills in southeast

Norway

  • glaciated;
  • mostly high plateaus and rugged mountains broken by fertile valleys;
  • small, scattered plains;
  • coastline deeply indented by fjords;
  • arctic tundra in north

Poland

mostly flat plain, mountains along southern border

Portugal

mountainous north of the Tagus, rolling plains in south

Romania

central Transylvanian Basin is separated from the plain of Moldavia on the east by the Carpathian Mountains and separated from the Walachian Plain on the south by the Transylvanian Alps

San Marino

rugged mountains

Soviet Union

  • broad plain with low hills west of Urals;
  • vast coniferous forest and tundra in Siberia,
  • deserts in Central Asia,
  • mountains in south

Spain

large, flat to dissected plateau surrounded by rugged hills; Pyrenees in north

Sweden

mostly flat or gently rolling lowlands; mountains in west

Switzerland

mostly mountains (Alps in south, Jura in northwest) with a central plateau of rolling hills, plains, and large lakes

United Kingdom

mostly rugged hills and low mountains; level to rolling plains in east and southeast

Yugoslavia

mostly mountains with large areas of karst topography; plain in north

Middle East

19 entries

Bahrain

mostly low desert plain rising gently to low central escarpment

Cyprus

central plain with mountains to north and south

Gaza Strip

flat to rolling, sand and dune covered coastal plain

Iran

  • rugged, mountainous rim;
  • high, central basin with deserts, mountains;
  • small, discontinuous plains along both coasts

Iraq

  • mostly broad plains;
  • reedy marshes in southeast;
  • mountains along borders with Iran and Turkey

Iraq - Saudi Arabia Neutral Zone

sandy desert

Israel

  • Negev desert in the south;
  • low coastal plain;
  • central mountains;
  • Jordan Rift Valley

Jordan

mostly desert plateau in east, highland area in west; Great Rift Valley separates East and West Banks of the Jordan River

Kuwait

flat to slightly undulating desert plain

Lebanon

narrow coastal plain; Al Biqa (Bekaa Valley) separates Lebanon and Anti-Lebanon Mountains

Oman

vast central desert plain, rugged mountains in north and south

Qatar

mostly flat and barren desert covered with loose sand and gravel

Saudi Arabia

mostly uninhabited, sandy desert

Syria

  • primarily semiarid and desert plateau;
  • narrow coastal plain;
  • mountains in west

Turkey now Turkiye

  • mostly mountains;
  • narrow coastal plain;
  • high central plateau (Anatolia)

United Arab Emirates

flat, barren coastal plain merging into rolling sand dunes of vast desert wasteland; mountains in east

West Bank

  • mostly rugged dissected upland,
  • some vegetation in west,
  • but barren in east

Yemen Arab Republic

  • narrow coastal plain (Tihama);
  • western mountains;
  • flat dissected plain in center sloping into desert interior of Arabian Peninsula

Yemen, People's Democratic Republic of now People's Democratic Republic of Yemen

  • mostly upland desert plains;
  • narrow,
  • flat,
  • sandy coastal plain backed by flat-topped hills and rugged mountains

North America

6 entries

Bermuda

low hills separated by fertile depressions

Canada

mostly plains with mountains in west and lowlands in southeast

Clipperton Island

coral atoll

Mexico

high, rugged mountains, low coastal plains, high plateaus, and desert

St. Pierre and Miquelon now Saint Pierre and Miquelon

mostly barren rock

United States

  • vast central plain, mountains in west, hills and low mountains in east;
  • rugged mountains and broad river valleys in Alaska;
  • rugged, volcanic topography in Hawaii

Oceania

34 entries

American Samoa

five volcanic islands with rugged peaks and limited coastal plains, two coral atolls

Australia

mostly low plateau with deserts; fertile plain in southeast

Baker Island

low, nearly level coral island surrounded by a narrow fringing reef

Cook Islands

low coral atolls in north; volcanic, hilly islands in south

Coral Sea Islands

sand and coral reefs and islands (or cays)

Fiji

mostly mountains of volcanic origin

French Polynesia

mixture of rugged high islands and low islands with reefs

Guam

  • volcanic origin, surrounded by coral reefs;
  • relatively flat coraline limestone plateau (source of most fresh water) with steep coastal cliffs and narrow coastal plains in north, low-rising hills in center, mountains in south

Howland Island

  • low-lying,
  • nearly level,
  • sandy,
  • coral island surrounded by a narrow fringing reef;
  • depressed central area

Jarvis Island

sandy, coral island surrounded by a narrow fringing reef

Johnston Atoll

mostly flat with a maximum elevation of 4 meters

Kingman Reef

low and nearly level with a maximum elevation of about 1 meter

Kiribati

mostly low-lying coral atolls surrounded by extensive reefs

Marshall Islands

low coral limestone and sand islands

Micronesia, Federated States of now Federated States of Micronesia

islands vary geologically from high mountainous islands to low, coral atolls; volcanic outcroppings on Pohnpei, Kosrae, and Truk

Midway Islands

low, nearly level

Nauru

sandy beach rises to fertile ring around raised coral reefs with phosphate plateau in center

New Caledonia

coastal plains with interior mountains

New Zealand

predominately mountainous with some large coastal plains

Niue

steep limestone cliffs along coast, central plateau

Norfolk Island

volcanic formation with mostly rolling plains

Northern Mariana Islands

  • southern islands are limestone with level terraces and fringing coral reefs;
  • northern islands are volcanic;
  • highest elevation is 471 meters (Mt. Tagpochu on Saipan)

Pacific Islands, Trust Territory of the now Palau

islands vary geologically from the high mountainous main island of Babelthuap to low, coral islands usually fringed by large barrier reefs

Palmyra Atoll

low, with maximum elevations of about 2 meters

Papua New Guinea

mostly mountains with coastal lowlands and rolling foothills

Pitcairn Islands

rugged volcanic formation; rocky coastline with cliffs

Western Samoa now Samoa

  • narrow coastal plain with volcanic,
  • rocky,
  • rugged mountains in interior

Solomon Islands

mostly rugged mountains with some low coral atolls

Tokelau

coral atolls enclosing large lagoons

Tonga

most islands have limestone base formed from uplifted coral formation; others have limestone overlying volcanic base

Tuvalu

very low-lying and narrow coral atolls

Vanuatu

mostly mountains of volcanic origin; narrow coastal plains

Wake Island

  • atoll of three coral islands built up on an underwater volcano;
  • central lagoon is former crater, islands are part of the rim;
  • average elevation less than four meters

Wallis and Futuna

volcanic origin; low hills

South America

14 entries

Argentina

  • rich plains of the Pampas in northern half,
  • flat to rolling plateau of Patagonia in south,
  • rugged Andes along western border

Bolivia

  • high plateau,
  • hills,
  • lowland plains

Brazil

mostly flat to rolling lowlands in north; some plains, hills, mountains, and narrow coastal belt

Chile

  • low coastal mountains;
  • fertile central valley;
  • rugged Andes in east

Colombia

  • mixture of flat coastal lowlands,
  • plains in east,
  • central highlands,
  • some high mountains

Ecuador

coastal plain (Costa), inter-Andean central highlands (Sierra), and flat to rolling eastern jungle (Oriente)

Falkland Islands (Islas Malvinas)

  • rocky,
  • hilly,
  • mountainous with some boggy,
  • undulating plains

French Guiana

low-lying coastal plains rising to hills and small mountains

Guyana

  • mostly rolling highlands;
  • low coastal plain;
  • savanna in south

Paraguay

  • grassy plains and wooded hills east of Rio Paraguay;
  • Gran Chaco region west of Rio Paraguay mostly low, marshy plain near the river, and dry forest and thorny scrub elsewhere

Peru

  • western coastal plain (costa),
  • high and rugged Andes in center (sierra),
  • eastern lowland jungle of Amazon Basin (selva)

Suriname

mostly rolling hills; narrow coastal plain with swamps

Uruguay

mostly rolling plains and low hills; fertile coastal lowland

Venezuela

  • Andes mountains and Maracaibo lowlands in northwest;
  • central plains (llanos);
  • Guyana highlands in southeast

Southeast Asia

18 entries

Ashmore and Cartier Islands

low with sand and coral

Brunei

flat coastal plain rises to mountains in east; hilly lowland in west

Burma now Burma (Myanmar)

central lowlands ringed by steep, rugged highlands

Cambodia

mostly low, flat plains; mountains in southwest and north

Christmas Island

steep cliffs along coast rise abruptly to central plateau

Cocos (Keeling) Islands

flat, low-lying coral atolls

Hong Kong

hilly to mountainous with steep slopes; lowlands in north

Indonesia

mostly coastal lowlands; larger islands have interior mountains

Laos

mostly rugged mountains; some plains and plateaus

Macau

generally flat

Malaysia

coastal plains rising to hills and mountains

Paracel Islands

undetermined

Philippines

mostly mountains with narrow to extensive coastal lowlands

Singapore

lowland; gently undulating central plateau contains water catchment area and nature preserve

Spratly Islands

flat

Taiwan

eastern two-thirds mostly rugged mountains; flat to gently rolling plains in west

Thailand

  • central plain;
  • eastern plateau (Khorat);
  • mountains elsewhere

Vietnam

  • low, flat delta in south and north;
  • central highlands;
  • hilly, mountainous in far north and northwest

Oceans

4 entries

Arctic Ocean

  • central surface covered by a perennial drifting polar icepack which averages about 3 meters in thickness, although pressure ridges may be three times that size;
  • clockwise drift pattern in the Beaufort Gyral Stream, but nearly straight line movement from the New Siberian Islands (USSR) to Denmark Strait (between Greenland and Iceland);
  • the ice pack is surrounded by open seas during the summer, but more than doubles in size during the winter and extends to the encircling land masses;
  • the ocean floor is about 50% continental shelf (highest percentage of any ocean) with the remainder a central basin interrupted by three submarine ridges (Alpha Cordillera, Nansen Cordillera, and Lomonsov Ridge);
  • maximum depth is 4,665 meters in the Fram Basin

Atlantic Ocean

  • surface usually covered with sea ice in Labrador Sea, Denmark Strait, and Baltic Sea from October to June;
  • clockwise warm water gyre (broad, circular system of currents) in the north Atlantic, counterclockwise warm water gyre in the south Atlantic;
  • the ocean floor is dominated by the Mid-Atlantic Ridge, a rugged north-south centerline for the entire Atlantic basin;
  • maximum depth is 8,605 meters in the Puerto Rico Trench

Indian Ocean

  • surface dominated by counterclockwise gyre (broad, circular system of currents) in the south Indian Ocean;
  • unique reversal of surface currents in the north Indian Ocean--low pressure over southwest Asia from hot, rising, summer air results in the southwest monsoon and southwest-to-northeast winds and currents, while high pressure over northern Asia from cold, falling, winter air results in the northeast monsoon and northeast-to-southwest winds and currents;
  • ocean floor is dominated by the Mid-Indian Ocean Ridge and subdivided by the Southeast Indian Ocean Ridge, Southwest Indian Ocean Ridge, and Ninety East Ridge;
  • maximum depth is 7,258 meters in the Java Trench

Pacific Ocean

  • surface in the northern Pacific dominated by a clockwise, warm water gyre (broad, circular system of currents) and in the southern Pacific by a counterclockwise, cool water gyre;
  • sea ice occurs in the Bering Sea and Sea of Okhotsk during winter and reaches maximum northern extent from Antarctica in October;
  • the ocean floor in the eastern Pacific is dominated by the East Pacific Rise, while the western Pacific is dissected by deep trenches;
  • the world's greatest depth is 10,924 meters in the Marianas Trench

Cite this page

Central Intelligence Agency. The World Factbook 1990, “Terrain”, all entries. Archived by The Factbook, thefactbook.org/fields/terrain/1990.

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