The red arrow in the photo below is pointing to a huge truck
Kimberley Big Hole - South Africa apparently the largest ever hand-dug excavation in
the world, this 1097 metre deep mine yielded over 3 tonnes of diamonds
before being closed in 1914.
Sinkhole, Guatemala - a sinkhole is caused when water (usually rainwater or sewage) is soaked up by the earth on a large scale, resulting in the ground collapsing.
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