“The Emerald Forest,” released in 1985, shares narrative similarities with films like “A Man Called Horse” (1970), though it involves a teenage character and is set against the backdrop of the Amazon, reminiscent of “Fitzcarraldo” (1982). Its influence can be seen in later works such as "Dances With Wolves" (1990) and visually, "Apocalypto" (2006). Directed by John Boorman, it’s a production that demonstrates a certa…