Mutant mammoths of Montana

Beth Farris and her brother, Reese, are camping with their parents in Montana's Glacier National Park. It's something the whole family has been looking forward to: a real camping trip, where they will stay overnight in tents, and toast marshmallows by the evening fire. They would go hiking, fishing, and sightseeing. However, when Beth and Reese set out together on a short hike, they find strange footprints in the earth ... footprints far bigger than any normal creature could have made.