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What used to be mined here?

gold

diamonds

petroleum

coal

The picture shows the Big Hole, an open-pit and underground diamond mine in Kimberley, South Africa. It is about 215 metres deep with a surface area of 17 hectares and it's claimed to be the largest hole excavated by hand, although this claim is disputed.

Ninjai

1

Bjørn Christian Tørrissen wikipedia → Big Hole

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Italy

1%

82%

3%

10%

57

South Africa

33%

66%

0%

0%

15

Poland

15%

63%

8%

11%

4612

Greece

13%

59%

10%

13%

37

Germany

15%

58%

8%

15%

521

the United Kingdom

17%

57%

6%

17%

180

the Netherlands

22%

55%

7%

12%

40

Australia

15%

53%

7%

20%

39

Israel

28%

50%

0%

21%

14

Spain

41%

50%

0%

8%

12

Austria

18%

48%

17%

15%

80

Switzerland

6%

47%

17%

28%

63

Unknown

23%

46%

23%

7%

13

Republic of Ireland

22%

45%

9%

22%

31

India

14%

44%

22%

17%

103

France

27%

44%

5%

22%

18

Canada

15%

42%

15%

23%

26

the United States

16%

40%

19%

23%

643

the Philippines

36%

26%

15%

21%

19

Nigeria

6%

26%

20%

40%

15

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