The Laetoli Walkway contains 54 hominid footprints pointing north along two parallel tracks. Mary Leakey considered these footprints her most important discovery during six decades of research in East Africa.

Radioactive dating places these footprints at 3.59 to 3.75 million years old. At the time of their discovery, the earliest known human footprints were left by Neandertals some 80,000 years ago.
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