WIthIN, released in Australia as "The Cavern", is for all intents and purposes a very cheap remake of "The Cave". The film borrows elements from a number of genre films; most noticeably "Blair Witch" and "Aliens", yet the similarities with "The Cave" remain overwhelming. WIthIN really should be a complete waste of time. However, despite its many failings, the film is surprisingly entertaining and possesses one of the better "shock" endings in recent memory.
I'm not sure which film came first, "The Cave" or "The Cavern", but they are ridiculously similar. In the former a caving expedition explores an ancient cave in Romania, while in the latter, cavers explore an old cave in Kazakhstan. In both films, the cavers are picked off, one at a time, by evil creatures. I enjoyed "The Cave" as stupid entertainment, mainly due to the stunning photography and impressive stunt work. And yet strangely, it is the absence of these qualities that gives WIthIN its sense of menace. The glossy stunt work in "The Cave", while spectacular to watch, has the effect of distancing the viewer. The caving action in WIthIN is less impressive but, as a result, more realistic.
"The Cavern" gains momentum as the film progresses. At first, I feared I was not only watching a zero budget re-imagining of "The Cave" but also the work of rabid "Blair Witch" fan. The first person perspective camera work, the resulting blurred images and the emphasis on strange noises all seemed very familiar. Thankfully, these annoying devices give way to an emphasis on more traditional gore. The violence is mostly implied but it is effective. If the script was less ridiculous and the actors somewhat more competent, the film could have been quite disturbing as the director definitely has a gift for creating a sense of suspense and claustrophobia.
The main reason to watch "The Cavern" is the ending, which is far more sinister and interesting that the main body of the film. The brutality of the finale took me by surprise, given the rather meek nature of the violence that pervades the rest of the film. The final revelation actually makes no sense at all given the circumstances surrounding the cavers' deaths earlier in the film. However, I was willing to overlook that small detail due to the gloriously exploitative turn of events. If the entire movie had been similar in tone, it would have packed a far heftier punch. As it is, WIthIN is a curious low budget horror film that shows glimpses of a director with some potential.