Geography of the Pitcairn Islands

The Pitcairn Islands form the south-eastern most extension of the geological archipelago of the Tuamotus of French Polynesia and consist of five islands: Pitcairn Island, Sandy Island (the last one found), Oeno Island (atoll with five islets), Henderson Island and Ducie Island (atoll with four islets).
The only permanently inhabited island, Pitcairn, is accessible only by boat through Bounty Bay.
Henderson Island, covering about 67% of the territory’s total land area and supporting a rich variety of animals in its nearly inaccessible interior, is also capable of supporting a small human population, but access is difficult, its outer shores comprising steep limestone cliffs of sharp coral.
The Pitcairn Islands were formed by a center of upwelling magma called the Pitcairn hotspot.
The other islands are at a distance of more than 100 km (60 miles) and are not habitable.
The Pitcairn Islands are one of two places in the world in which the plant species Glochidion pitcairnense occurs.

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