Oh believe me, they've already been explored and anything of any value is already gone. The big waterfall that we rode to on Friday had fresh dug holes all over the place back behind it, at least under the rocks that were small enough to move. That one is on National Forest land so if they're caught at it there'd be big fines involved. And the big one I was standing in on Saturday still had the buckets and garden rakes in there. That kinda surprised me too, even though it's on private land, because it's not too far off of a fairly well-traveled horse trail. I don't know if they decided there was nothing in there, gave up and just didn't feel like hauling their stuff back outta there or if they were coming back to it later. It was kinda strange.
Odd that they leave stuff behind, including the holes. We try really hard to leave no indication of our passing and searches. Figures they have been searched plenty - they look like great places for burying the payroll :)