Dig down with the iron shovel and you will meet stones. The blade clinks and stops on a buried cobble, and once you have dug to it you can see it sitting in the pit. Dig round it, then swing at the stone itself: the shovel levers it out and it drops into the pit as a cobble or a large cobble you can pick up. They are real matter in the ground, one to three of them in a pit through forest subsoil.
The walls of a pit no longer smear: dug ground is textured from the side on its walls and from above on its floor, and a pit’s rim is a clean edge. The deepest corner can still look streaky when you see a wall almost edge on. A fault that could refuse every dig after the blade hit bedrock, or after loading a world you had dug in, is fixed.
