I bought the Blu-ray when it was released. Had not seen it since it was on TV when I was a teenager in the seventies. Made an impression on me then I recall. Watched the Blu-ray with my wife and kids, they all enjoyed it very much, especially the music It has aged pretty well I think , very tense and I would recommend it.
Some of this was filmed in the Dominican Republic where my son had just returned from a years volunteering. He actually recognised some of the jungle locations , which is really quite a bizarre fact, but true .