The Garden of Aunt Isabel

The Garden of Aunt Isabel is a 1971 Mexican historical drama film directed by Felipe Cazals and starring Jorge Martínez de Hoyos, Claudio Brook and Ofelia Guilmáin. During the early 16th century, two Spanish ships are wrecked on the Mexican coast. A group of survivors set out on a trek to try to locate a famed El Dorado.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.