A misread map, a sudden storm, a forgotten headlamp—and suddenly a leisurely hike turns into a treacherous endeavor. In the past decade, inexpensive but sophisticated navigation devices and mobile phones have led to alarming levels of overconfidence on the trail. Adding to this worrisome trend, the increasing popularity of ventures into mountainous terrain has led hikers seeking solitude—or an adrenaline rush—into increasingly remote or risky forays. Sandy Stott, the “Accidents” editor at ...

A misread map, a sudden storm, a forgotten headlamp—and suddenly a leisurely hike turns into a treacherous endeavor. In the past decade, inexpensive but sophisticated navigation devices and mobile phones have led to alarming levels of overconfidence on the trail. Adding to this worrisome trend, the increasing popularity of ventures into mountainous terrain has led hikers seeking solitude—or an adrenaline rush—into increasingly remote or risky forays. Sandy Stott, the "Accidents" editor at ...