Plot-and-Berm agroecosystems agriculturally utilized marginal lands in a sophisticated fashion, where a high-water table existed within loose, aeolian sand sheets, in semi-arid to Mediterranean climates. The agroecosystems consist of polygonal agricultural plots sunken between several meters high berms. Ceramics and glass date the agroecosystem to the 10^th-11^th centuries (Early Islamic period) that are compatible with preliminary published OSL ages. Anthrosols in the plots have distinct upper and lower boundaries with limited root casts suggesting that the Early Islamic crops were annual and not woody perennial species like vines. The anthrosol is currently only 1 m above the modern groundwater table, which appears to have enabled easy access by hand-dug pits for manual irrigation practices. Anthrosols were enriched to enhance soil productivity. Berm tops were coated with ~0.3-0.7 m thick and dark anthrosediments that were topped with flat pebble to cobble size artifacts. This coupling remarkably preserved the berm morphology and the whole agroecosystem from aeolian and fluvial erosion until modern times. The current study will help assess the social-economic effort needed to develop and maintain this agroecosystem, and its relation to ancient Caesarea.