UNDER THE MOUNTAIN (1981) - DVD

Made-for-TV science fiction horror! Stars Kristy Wilkinson, Lance Warren, and Roy Leywood. Two teenage twins, Rachel and Theo, visit New Zealand. They reunite with a man who saved them when they were lost in the mountainous woods on a prior visit. The reunion turns serious and dire and the man revels to them the existence of shape-shifting slug monsters that live in the bowels of the mountains. These creatures plan to dominate Earth similar to body snatchers. Can the trio, with the knowledge, stop them before it begins?