How Do You Paddle a Disappearing River?

I had barely unbuckled my seatbelt and was already wondering if I had driven six hours across Texas for nothing. A once-in-a-lifetime river adventure had seemingly evaporated with some disappointing news.It was the promise of a four-day, 33-mile canoe journey in Big Bend National Park, snaking through awe-inspiring canyons on a mighty river, that had lured me across the state. My partner’s brother, Michael…