Title: Rätsel der Urwaldhölle
Subjects: Description and travel, Deutsche Amazonas-Jary expedition, 1935-1937, Indians of South America, Secular Cantatas, Scores, Deutsche Amazonas-Jary Expedition (1935-1937)
Places: Brazil, Jari River Valley (Amapá and Pará, Brazil), Pará (Brazil : State), Pará (State)