Every year, millions of visitors head to national parks to set out on hiking trails that wind through dense forests, camp beneath the stars, and experience the thrill of spotting wildlife in its natural habitat (from a safe distance, of course). For most, that's exactly what happens. But for some, the trip ends in tragedy.

Since its inception, the National Park Service (NPS) has worked to ensure adventure doesn't come at the expense of safety. Rules about where to hike, how to store food, and when to light campfires aren't designed to limit visitors – they're meant to protect them from real hazards.

Despite those efforts, one park has seen its share of incidents. Since 2007, at least 150 people have died in America's most popular national park, Great Smoky Mountains National Park. Whil

See Full Page