By Michael Lanza
We step into the ankle-deep North Fork of the Virgin River, in the backcountry of Zion National Park, and water at refrigerator temperature immediately fills our boots. Until sometime tomorrow afternoon, we’ll walk in this river almost constantly, crossing it dozens of times—with the 50° F water, at its deepest, coming up nearly to our waists. As we splash downstream, the canyon walls of golden, crimson, and cream-colored sandstone steadily creep inward and stretch higher, soon eclipsing the sun. We’ll see very little direct sunlight as the sheer walls of Zion’s Narrows eventually tower a thousand feet overhead and, at times, close in to the width of a hobbit’s living room.