This underground museum is tucked within the Carpetana metro station in Carabanchel, a neighborhood in southern Madrid. Commuters rushing through the corridor can pause to admire informative panels about the fauna and flora that existed here 14 million years ago, replicas of fossils that were unearthed here, and even a reconstruction of an extinct type of mastodon.
In 2008, when workers were making improvements to the metro station, they discovered thousands of fossils while digging a pit. The Museum of Natural Sciences compiled the ancient specimens, making it possible to envision how this part of the city would have looked in the Middle Miocene.
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