Excavations at two quarries in Wales, known to be the source of the Stonehenge 'bluestones', provide new evidence of megalith quarrying 5,000 years ago.
from All Top News -- ScienceDaily https://www.sciencedaily.com/releases/2019/02/190219080737.htm
from All Top News -- ScienceDaily https://www.sciencedaily.com/releases/2019/02/190219080737.htm
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