title: Cruciform eminence
text: # Cruciform eminence
  
  The cruciform eminence (or cruciate eminence) divides the deeply concave internal surface of the occipital bone into four fossae:
  
  * The upper two fossae are called the cerebral fossae, are triangular and lodge the occipital lobes of the cerebrum.
  * The lower two are called the cerebellar fossae, are quadrilateral and accommodate the hemispheres of the cerebellum.
  
  The upper fossae are separated from the lower fossae by a groove for the transverse sinuses. At the point of intersection between all four fossae is the internal occipital protuberance.
  
  ## Additional images
  
  * Cerebral fossa (shown in red)
  * Cerebellar fossa (shown in red)
  