Do you know of other mature similar thrillers?
I can think of PREDATOR (the first one).
Can be anything from drama/thriller/horror...But ideally realistic and in Jungle, or possibly with similar athmosphere even tho not in Jungle (serious/dark IE: Live & Die in LA also by Friedkin).
No "feeling good" films.
I want dark flawed or tough characters
You've probably seen them, but Apocalypse Now and Deliverance. Maybe try Dead Man too.
shareTry Werner Herzog's Aguirre: the Wrath of God
shareFitzcarraldo. Not a thriller but it has the South American vast jungle foreboding that makes you feel you are nought bigger than an ant.
shareAPOCALYPTO
there is an indian movie called JUNGLE. but its not that good.
THE GREEN INFERNO
Southern Comfort.
shareJungle 2 Jungle starring Tim Allen
just kidding
The made for TV adaptation of Conrad's Heart of Darkness (on which Apocalypse Now was Loosely Based) isn't bad. It's worth watching as a "nice try, but not cigar" attempt at adapting Conrad's great work to film.
shareThe Emerald Forest