The Emperor of New Spain in the Court of Monkeys
Consider it The Heart of Darness, or Apocalypse Now, set in the Amazon... The story of an expedition based on the diary of the Dominican friar Gaspar de Carvajal.
Aguirre, the Wrath of God (1972)
As with Apocalypse Now, the cast and crew of this film nearly went as insane as the characters themselves.
Don Lope de Aguirre (Kinski) and a band of Spanish conquistadores descend from the Andean mountains of the Incan empire and head up the Amazon River in search of the mythical city of gold, El Dorado.
Of course, it all goes horribly wrong. Like all megomaniacal quests for riches, fame, power and empire, it descends into betrayal, madness, and destruction.
The final scene on the raft when all is lost, and Aguirre's daughter Florés has just taken an arrow...
When we reach the sea
We will build a bigger ship
Sail north and take Trinidad
from the Spanish crown
From there we'll sail on
and take Mexico from Cortez
What great treachery this will be!
Then, all of New Spain will be in our hands
and we'll stage history like others stage plays
I, the Wrath of God
will marry my own daughter
and with her I will found
the purest dynasty the earth has ever seen
Together we shall rule this entire continent
We will endure
I am the Wrath of God!
Who else is with me?