& the jungle, the jungle. the stunning array of poisonous, malevolent, preternaturally malicious creatures - insects, spiders, fish, snakes, bats, crocodiles, on & on... the weather. the forest. the constant fear of poison-arrow "savages" (whom Fawcett, unlike the rubber-boomers, gold-hounds & slavers, is able to befriend, it seems, without too much trouble). the unbelievable "life is cheap" attitude, self-punishing, despairing, drunken, fevered (Fawcett depicts over & over) of exploiters & exploited... his own unquenchable hunger to go back there, again & again. 1906-1925. Werner Herzog's movie "Aguirre, Wrath of God" catches a bit of it.