As we talked, Rusty stopped, backed up, bent down and began chipping at some rock in the road. He said he suspected there was a stringer right here that crossed the road.

The father-son duo spent years combing this bit of Pennsylvania wilderness with high-end metal detectors, drills and other tools to prospect for a fabled cache of Civil War gold.

I opted for the underwater portion of the river. All I have to do is float down the river and pick large flakes and small nuggets out of cracks and crevices while staying cool in the summer heat.