Why would anyone get up at 4:30am to stumble to the edge of the Grand Canyon in the middle of Winter? Here are a few reasons. These images would have been impossible any other time of day AND without crampons (and cameras). The canyon edge was thick with ice these mornings. Perfect with inch-long ice spikes. Maybe deadly without.
Not wearing spikes: the park's mule deer. This one photographed inches from the canyon rim.