For centuries, the source of Stonehenge's massive sarsen stones have been an open mystery.
원문출처 : https://www.cnn.com/style/article/stonehenge-sarsen-stones-intl-hnk-scli-scn/index.html
원문출처 : https://www.cnn.com/style/article/stonehenge-sarsen-stones-intl-hnk-scli-scn/index.html