Science & Tech
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Near the summit of Mystery Hill is a massive complex of stone chambers, walls, and large standing stones. Both radiocarbon dating and the placement of the astronomically oriented standing stones indicate that this site was constructed at least 4000 years ago. Like Stonehenge in England, it accurately plots many solar and lunar events, such as solstices and equinoxes, as well as many ancient holidays.
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Salem, New Hampshire · United States