I'm trying to find the title of a film I liked as a young child - the start of the film had a little boy lost in an otherwordly jungle that seemed like a maze of giant roots. Glowing yellow and red fruit grew on some of the plants. Later in the film there was a colony of faceless people that tried to force other people to become "one with them"... strange film, but I have an urge to watch it again if I can find it!