Island of Lemurs

is another name for Madagascar, in case you did not know.

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Backside reads:
République de Madagascar - de couleurs en reflets les hauts-plateaux
The photos were taken in the central highlands of the island, approximately 750 to 1500 meters high.

On the stamp it reads "Haut fourneau de Jean Laborde". He was an adventurer who came to Madagascar in 1831 and began to manufacture guns. The picture shows one of his blast furnaces.