Hacker News new | ask | show | jobs
by aidenn0 2185 days ago
FWIW, I just pulled open my red-box era OD&D books and the maps are all hatched in various styles when underground, but stippled (kind of a grassy texture) to indicate exterior; so e.g. a for a keep in the side of a mountain it would be clear which walls abut solid matter and which are stone.

The maps in the basic set use circles rather than lines for the hatching though.