Fortress

I had the same experience other members had with this film. I saw it on HBO when I was eight and it's since become part of me. Like them, I Googled, queried, etc. Unfortunately, my memory failed on the major points and I came up empty-handed. Finally, another member of IMDb came through. Anyway, this film is a lost jewel. It scared the hell out of me as a kid and I hope to see it again if I can find a used copy of the VHS somewhere. The premise is pretty simple. A group of Aussie thugs take a young teacher and her charges hostage, their escape and subsequent fight for survival turns bloody at the end. I still recall holding my breath during the underwater cave scene and never quite being able to hold it long enough. If you get a chance to watch this flick do so. Its ultra-rare and unforgettable.