Cullinan Big Hole

The Cullinan Big Hole, under De Beers' ownership since its opening in 1903, boasts a pit four times the size of Kimberley's Big Hole. Still active, it is crucial in supplying 25% of the world's gem-quality diamonds. This mine gained global recognition in 1905 when the massive 3,108-carat Cullinan Diamond was unearthed, now an essential part of Britain's Crown Jewels. Daily tours provide engaging and educational surface and underground explorations for visitors.