Adrenaline doesn’t freeze, in fact it might even intensify when exposed to leviathan walls of ice and frozen waterfall pillars. Ice climbing in Colorado isn’t your run-of-the-mill thrill; it takes a certain kind of kook to challenge the slick stuff with an ax, helmet, rope and a pair of crampons. Adventure-loving Ouray has created an entire park dedicated to the sport, and it’s a haven for ice climbers. So even if you don’t dare scramble up to the top of an ice wall, you’re more than welcome to watch the daredevils who do.