Hmm I never thought of marking cave areas like that - thats a good idea. I always hated caving before because I would get disoriented, running around in circles, and then just end up mining my way to the surface.
Well, yes. But in caves I get disoriented and have to dig my way back to the surface and then trot over to my base. Is that what he does? I somehow think he has done this enough he never gets lost. Even temporarily. I get lost temporarily all the time lol