Kliebhan, B. : E.A. MARTEL’s Visit to Mammoth Cave, USA, in 1912
E.A. MARTEL’s Visit to Mammoth Cave, USA, in 1912 The story behind an inscription A discovery made recently in Mammoth Cave, USA, by Cave Guide Kerry Wood provided a true sensation to speleo historians: In „Hovey’s Cathedral“, a section of … Weiterlesen →