The explorer and naturalist Alexander von Humboldt travelling on mules in the Andes. Humboldt (1769-1859) was a Prussian geographer, naturalist and explorer. His quantitative work on botanical geography laid the foundation for the field of biogeography. Between 1799 and 1804, Humboldt travelled extensively in Latin America, exploring and describing it for the first time in a manner generally considered to be a modern scientific point of view.

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Alexander von Humboldt in the Andes, early 1800s

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