A massive experiment in virtual archeology has led to the mapping of 3,000 acres around Stonehenge, and with it the discovery of a host of new information about the area, including over a dozen previously unknown monuments, National Geographic reported. The Stonehenge Hidden Landscape Project, led by researchers at the University of Birmingham and the Ludwig Boltzmann Institute in Austria, has spent four years using an array of technology — aerial photography, laser scanning, airborne imaging spectroscopy, magnetic prospection, ground-penetrating radar, electromagnetic induction, and more — to uncover the landscape around Stonehenge without actually unearthing it.
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