 Many times, Peter and I found ourselves 2,000, 2,500 feet above the Colorado on cliffs and ledges that would have prevented us from getting to the river, and we were completely dependent on what are called potholes, incredibly thin, ephemeral puddles of water that collect after each storm that evaporate after each and every rainfall. And you hop starts from one to the next, knowing that if you can't find the one that you're searching towards,