10. Interpeduncular Fossa
The interpeduncular fossa is a crucial depression at the base of the brain, located on the midbrain between the two large cerebral peduncles (crura cerebri). Its floor contains important structures like the mamillary bodies, tuber cinereum, infundibulum, and the posterior perforated substance, while the optic chiasma forms its front, and it's where the oculomotor nerve (CN III) emerges-PKK