For decades, tourists walked through a cave in Spain without realizing they were surrounded by prehistoric artwork.

Archaeologists eventually identified 280 Ice Age engravings. A major study was published today.

The best part?

Some visitors had actually carved their own names and dates over the ancient artwork.

Imagine scratching "Dave was here" over something created thousands of years before you were born. Lol

🧭 Let's find your bearings.

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