Countries & territories · neighbouring countries
Neighboring Countries of Saint Helena, Ascension, and Tristan da Cunha
Saint Helena, Ascension, and Tristan da Cunha has no land borders with any other country — it is surrounded by sea.
- Saint Helena, Ascension, and Tristan da Cunha
- Neighbouring countries
Geography of Saint Helena, Ascension, and Tristan da Cunha
Location
Islands in the South Atlantic Ocean, about midway between South America and Africa; Ascension Island lies 1,300 km (800 mi) northwest of Saint Helena; Tristan da Cunha lies 4,300 km (2,700 mi) southwest of Saint Helena
Area
394 km² — slightly more than twice the size of Washington, D.C.
Terrain
The islands of this group are of volcanic origin associated with the Atlantic Mid-Ocean Ridge Saint Helena: rugged, volcanic; small scattered plateaus and plains Ascension: surface covered by lava flows and cinder cones of 44 dormant volcanoes; terrain rises to the east Tristan da Cunha: sheer cliffs line the coastline of the nearly circular island; the flanks of the central volcanic peak are deeply dissected; narrow coastal plain lies between The Peak and the coastal cliffs
Climate
Saint Helena: tropical marine; mild, tempered by trade winds Ascension Island: tropical marine; mild, semi-arid Tristan da Cunha: temperate marine; mild, tempered by trade winds (tends to be cooler than Saint Helena)
Highest and lowest points
Highest: Queen Mary's Peak on Tristan da Cunha 2,060 m; Green Mountain on Ascension Island 859 m; Diana's Peak on Saint Helena Island 818 m. Lowest: Atlantic Ocean 0 m.
Natural resources
Fish, lobster
Natural hazards
Active volcanism volcanism: the volcanoes of Tristan da Cunha (2,060 m) and Nightingale Island (365 m) are active
Good to know
Saint Helena harbors at least 40 species of plants unknown elsewhere in the world; Ascension is a breeding ground for sea turtles and sooty terns; Queen Mary's Peak on Tristan da Cunha is the highest island mountain in the South Atlantic and a prominent landmark on the sea lanes around southern Africa
Frequently asked questions about the borders of Saint Helena, Ascension, and Tristan da Cunha
How many countries border Saint Helena, Ascension, and Tristan da Cunha?
Is Saint Helena, Ascension, and Tristan da Cunha landlocked?
What is the highest point of Saint Helena, Ascension, and Tristan da Cunha?
Borders and geography: CIA World Factbook (public domain).