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Towering pinnacles, Singi Dibemiraha.

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Madagascar is off the African coast in the Indian Ocean.

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Dubbed the Ark of Evolution, its eco-diversity is extraordinary.

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About 30 species of Lemur monkeys live here.

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Singi Dibemiraha is on the western side of the island.

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The pinnacle formations cover 1,520 square kilometres.

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The limestone needles are about 100 metres high.

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Singi means pointed peaks in the local Madagascar language.

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The limestone seabed gradually rose to create a plateau around 200 million years ago.

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Heavy rain fell on the plateau, slowly eroding and sharpening the rocks.

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Sifakas use their long legs to jump from rock to rock. They're one type of Lemur.

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They risk this route to move from one forest to the next.

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There are dense forests below the limestone needles.

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The roots of trees growing at the foot of the limestone pinnacles penetrate the rock surface and make their way underground.

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They stretch down in search of water to the calcareous cave beneath the limestone plateau.

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The water running below provides Singi with a precious water supply.

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The leaves are available throughout the year and are the Sifakas' main source of food.

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People began inhabiting the island of Madagascar around 2,000 years ago

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and they have burned forests to create agricultural land ever since.

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Madagascar retains only 10% of its original forest cover.

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Very little habitat remains for the Lemurs.

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The needle peaks have resisted relentless exploitation by humans

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who would go all the way to secure land by burning off fields.

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Singi has resisted human penetration and protected the forests.

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The Sifakas survive within an intricate balance between man and nature.

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www.sifakas.com