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Directly to the north of the Grüner Seifen placer deposits is the Heiliger Geist and St. Bartolomäus sinkhole field. It is distinguished by long, crevice-like sinkholes caused by the collapse of mining shafts. In some places, these sinkholes run parallel to each other only 5 metres apart. The sinkholes are up to 5 metres deep. Further to the west, the sinkholes give way to surface mines about 8 metres deep over an area of about 100 metres in diameter.

Impressions