By the time I reached the apex of a near-vertical rocky path, I’d been running for more than two hours. I had sweat dripping from my chin, blood oozing from my elbow and knee—courtesy of a hidden tree root—and dark thoughts crawling through my mind. (This is vacation???) And then, just like that, from one punishing footfall to the next, I attained the ridge … and everything changed.
National Geographic Adventure – September 2013