This area is his own backyard,.. he knows it as well as anyone knows their backyard,
He has lived there all his life.
I keep in mind that abandoned mines are extremely dangerous to him, and him loaded down with an inert dead body of a fully grown woman , trying to get a foothold, shifting around at the entrance to a crumbling mine is about as dangerous a game as anyone can play. Bodies dont just slip down mines by themselves, he would have had to work up a hell of a sweat that hot morning to play out this scenario....
These mines are abandoned for the reason that they are no good to enter anymore, the entrance has collapsed, the tunnel has collapsed, it's all a rocky crumbling dangerous unmapped, unknown, unregistered hole in the ground, how deep no one knows, it could be 1/2 metre, or 30 metres... it could be full of red bellied browns, cranky at being disturbed....