By Michael Lanza
I’m slogging up a long ramp of beach-like sand toward Cox Col, an off-trail pass sitting a few ticks over 13,000 feet in California’s John Muir Wilderness. The high-altitude sun feels like a blacksmith’s forge hovering right above my head. My breaths come faster than my steps, and I feel lightheaded. But I’m thinking mostly about the pass ahead of us—and whether there’s a safe route over it.