In the human brain, the rhomboid fossa is divided into symmetrical halves by a<unk>  sulcus which reaches from the upper to the lower angles of the fossa and is deeper below than above. On either side of this sulcus is an elevation, the<unk><unk> , bounded laterally by a sulcus, the sulcus limitans. In the superior part of the fossa the<unk><unk>  has a width equal to that of the corresponding half of the fossa, but opposite the superior fovea it forms an elongated swelling, the colliculus facialis, which overlies the nucleus of the abducent nerve, and is, in part at least, produced by the internal genu of the facial nerve.
Medial eminence of floor of fourth ventricle
Posterolateral sulcus of medulla oblongata
Horizontal fissure of cerebellum
Anterior median fissure of the medulla oblongata
Interventricular foramina 
Cortical homunculus
Postcentral sulcus
Cingulate sulcus