"Tracker Garth Harwood says to first ask yourself whether the hole is even worth investigating. If it is old and weathered, it has probably been through a lot and seen multiple users. 'That’s not a hole that’s going to give you any satisfaction,' he says."
I wrote about HOLES out of sheer obsession and luckily found some satisfying answers via Local Hole Experts. This is a very very partial hole guide—if you want me to get into cavities (har), write letters@baynature.org demanding the whole hole story. Gift link: baynature.org/magazine/sum...