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A miniature airborne drone has helped archaeologists capture images for creating a 3-D model of an ancient burial mound in Russia, scientists say. Archaeological sites are often in remote and rugged areas . As such, it can be hard to reach and map them with the limited budgets archaeologists typically have.

A miniature airborne drone has helped archaeologists capture images for creating a 3-D model of an ancient burial mound in Russia, scientists say.