I had watched a kind of horror movie in round about 2008 but I don't know the release date of the movie itself.
In that movie a group of people went on journey to jungle and soon some strange events start happening with them and one by one they got killed by jungle creatures(ants, scorpions, centipedes, snake etc). In one event a person got eaten by large colony of ants, later one person got eaten by scorpions or centipedes or so, later in the journey some got slipped and had similar fortune. I could saw centipedes or something flowing inside the skin of the person being attacked. I remember that at the end about 2-3 persons left and they had to face a BIG snake in the river. Some how they killed the snake and went out of the jungle to some other town through a boat which they had made from some woods. Those 2-3 were the only persons who survived.
It was a color English movie(I am confused if it was English but i think so, I was young I hardly cared to listen to them I was fully immersed in the scene). In the journey through lush green jungle they passed through valleys. Climbed steep paths etc. The whole movie was full of unfortunate events. Almost complete movie was made in jungle, only the last few minutes of movie showed a town where the survived persons had reached through small boat like structure.
I don't exactly remember neither the names of the actors nor anything else that can give me a keyword to search in google to find.