Extreme Vacations

hat is too extreme? That was a common question among vacationers—and others for that matter—in the wake of the deadly volcanic eruption in New Zealand in December. To be sure, many of those exploring White Island last year didn’t think they were putting themselves in danger. But for some adventurers, danger is exactly the point; in fact, there is a whole category of vacations custom-designed for extreme thrill seekers. “Our clients are looking for high-adrenaline