There is a smaller occipital lobule in the lobe known as the cuneus. This connects with visual areas in the cuneus and primary visual cortex. Its name is derived from the Latin "cuneus", meaning a wedge. It is located in front of the cuneus (the upper portion of the occipital lobe). The term cuneiform comes from "cuneus", Latin for "wedge". In springs the basic colour is darker, while the cuneus is bright orange-yellow. A Sarmatian unit of heavy cavalry ("Cuneus Sarmatarum"), was stationed near the crossroads at Ribchester. The cuneus is bounded anteriorly by the parieto-occipital sulcus, inferiorly by the calcarine sulcus.