 Forming Morocco's Central Massif, the Meseta Domain completely conceals Precambrian rocks, although boreholes have found Neoproterozoic rocks in a Meseta anticline.The domain is split in two by the Middle Atlas fold belt.The Western Meseta has relatively little sedimentary cover and well-developed massifs, while the Eastern Meseta spanning the border with Algeria has numerous, small Paleozoic massifs.