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Ancient Civilizations

Discover the world’s most mysterious ancient civilizations, from lost cities and megalithic structures to forgotten knowledge and unsolved archaeological puzzles.

Red rock paintings on the limestone cliffs of Huashan in southern China

How Image Enhancement Reveals Faded Rock Art

What if a rock face that looks empty to us is still carrying a faint memory of paint? A digital photograph can preserve tiny differences between pigment and stone even…

Limestone cave interior, representative archaeology image

Why Archaeologists Leave Some Discoveries Unexcavated

Finding an ancient structure does not always mean that archaeologists should uncover all of it immediately. In some cases, the most responsible decision is to leave part of a site…

Researcher testing an archaeological figurine in a thermal demagnetizer

A 112°C Test Could Help Expose Forged Ancient Pottery

Archaeologists and museums may soon have a new way to test suspicious clay objects: a controlled heating experiment that separates pottery more than 1,000 years old from modern material. A…