1965 Map of Port San Luis

About this map

The coastal headlands of the Irish Hills dominate this survey, where the terrestrial landscape meets the shelf of the Pacific Ocean. Along the northern reach, the protected lands of Montana De Oro State Park showcase a series of deep drainages including Coon Creek and Diablo Canyon, which cut through the uplifted marine terraces. The presence of a Substation near the coast and a Mine and Quarry to the east suggests the early development of infrastructure and resource extraction within this coastal belt.