mineshaft
Noun
Meaning
excavation consisting of a vertical or sloping passageway for finding or mining ore or for ventilating a mine
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Examples
Eden Taylor-Draper has played Belle Dingle since 2005, when she fell down a mineshaft on Christmas day.
Take a raft through the underground salt mines and zoom down a mineshaft slide—all while learning the rich history of Austria's "white gold."
They were herded into the forest, pushed into an abandoned mineshaft and grenades were then hurled into the mineshaft.