"Sigismund Ernst Richard Krone was a German naturalist, zoologist, spelunker, archaeologist and researcher born on 18 June 1861 in Dresden, Germany. Having been the discoverer of ...
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the Devil's Cave in 1891, together with the Danish naturalist Peter Wilhelm Lund (1801-1880) he explored and studied the endokarst region of southeast Brazil, making both paleontological and archaeological discoveries in 41 of Iporanga's caves, which he examined between 1895-1906." - (en.wikipedia.org 11.08.2021)