I'm curious about powerlines in my area... Are they good spots for identifying erosion and following to pockets? Or do they turn the dirt a lot when constructing them so it's not even worthwhile?

I've got one power line corridor on my short list of central Virginia locations to check out, because it appears from maps research that some old mine pits lie just into the woods line.  I won't know the land's posted status until I get around to going.  Seems that more and more, landowners are gating and posting power line corridors.  (Around here, I believe utilities just have right of way access.)  Nearby is an open access spot I partially explored recently, so when I check out the power line I will have a Plan B in hand.