Ranking America's national parks for perils? Beware of fatal flaws with death statistics.

Anyone with even a mild case of acrophobia is familiar with the gut-flipping fear that arises while peering over the edge of the Grand Canyon.

Death is one false step away.

So, it may come as no shock that a European marketing company known as Outforia has identified Arizona’s abyss as the “most dangerous” venue in America's National Park system.