Nature, even confined to the boundaries of a park, is red in tooth and claw. No, it wasn't bears, mountain lions, or anything so dramatic as wildlife predators that were responsible for the majority of deaths to visitors of America's national parks, but these wilderness destinations are nevertheless deadly, dangerous places that demand caution from visitors.

To emphasize that point, Outside magazine tabulated the 10 deadliest national parks, culling records from January 2006 to September 2016. According to National Park Service Public affairs officer Jeffrey Olson, the fatalities at parks were from drownings, motor vehicle crashes, and falls, in that order of prevalence: Bears, by contrast, might as well be friendly.

Maybe you guessed this at "drowning:" With its 82,000 acres along San Francisco Bay and the Pacific Ocean, the Golden Gate National Recreation Area, visited by 15.6 million people annually, made the list at number five. Over a decade, 85 deaths occurred, and as visitors are warned the area is particularly dangerous to swimmers with its unpredictable rip currents.

For those who are morbidly fascinated, the first place spot on the list went to the Lake Mead National Recreation Area. Located in the Nevada desert, the park has fewer than half the annual visitors of the GGNRA, but was nonetheless the site of 254 deaths, also mostly due to drowning.

In second place, and topping the GGNRA as the most deadly National Park in California, was Yosemite National Park, with 150 deaths. 5 million annual visitors to the park enjoy its high peaks and precipices, but falls and natural causes like heart attacks claim many lives each year. The spectacular natural phenomenon of Half Dome alone has claimed 20 lives over the period.

After Yosemite comes Yellowstone, at number four, followed by the GGNRA in the fifth slot. Further down the list are the Glen Canyon National Recreation Area in Colorado, where 82 people have died in the last decade; Denali, where 62 have perished; the Great Smoky Mountains National Park with 69 deaths; Grand Teton National Park with 59; and Natchez Trace Parkway, in the Appalachian foothills, with 56 fatalities.

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