A security agent (Adrian Paul of Highlander series) is sent to investigate a remote scientific camp in Africa. He arrives in the middle of a sandstorm to find the place mysteriously abandoned. No one is there. He spends the night and in the morning meets a woman, Kat, who explains that she works there and is the only one left. She tells him that they all went insane. In fact, she shows him a dead body that someone else killed. The scientists had been drilling for oil and hit something very far down. Is it hell? And is Kat really a human?
This is one of those movies where you're not sure if there's something supernatural going on or if the main character is bat-shit crazy. In this case, it may be a little of both.