"A Pinge (pronounced "pinger", plural: Pingen) or Binge ("binger") is the name given in German-speaking Europe to a wedge-, ditch- or funnel-shaped depression in the terrain ...
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caused by mining activity. This depression or sink-hole is frequently caused by the collapse of old underground mine workings that are close to the Earth´s surface. Unlike natural landforms, a Pinge is a direct result of human activity. The term has no direct equivalent in English, but may be translated as "mining sink-hole", "mine slump" or, in some cases, as "glory hole"." - (en.wikipedia.org 14.10.2022)
