There comes a moment when you're stuck in a canyon, with rock walls soaring on either side, that you realize there is no way out but down.
That's where I found myself when I went canyoneering deep into the mountain crevices of an Arizona chasm known as Bear Canyon with Rich Rudow and Todd Martin. They are part of a new generation of modern explorers who risk death for the privilege of being the first humans to see the last of the American unknown.
Credit: Todd Martin
Rudow and Martin are...Full Story