Morro Bay, California is a biotically-diverse region with a rich cultural history. In the archaeological community, there is an ongoing debate over the probable cause for an occupational hiatus in the region during the Middle Period (2600-1000 BP). This case study addresses this disparity and presents the results of a single component, deeply buried, Middle Period archaeological site. This thesis highlights how landform age, landscape evolution, and geoarchaeological methodology can affect the probability of identifying deeply buried archaeological sites. Interdisciplinary data (e.g., seismology, geology, geography, paleoseismology) have proven useful in making a significant contribution in the understanding of a previously unknown period of occupation in Morro Bay.