The Sinks Canyon received its name from a very unique feature of the Popo Aque river.
Two photos of the river before it "sinks"
This is where it reappears,
looking downstream after the pool where it reappears.
Driving deeper into the canyon and the road climbs with a series of "switchbacks" that will take you breath away (just ask the wife!).
This was taken about 2/3 the way up at the first pull out and I was duly informed that we WOULD be turning around and heading back down.