This October, 60 runners from across the globe will descend to a depth of 1,120 metres below the Earth’s surface to compete in what’s being hailed as the world’s deepest marathon Hosted inside Boliden’s Garpenberg zinc mine in Sweden — one of the deepest in Europe — the event promises to push the boundaries of physical and mental endurance, while raising over £1 million ($1
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Source and Credit: mining.com
