Gasserian ganglion sits within a fold of dura mater called Meckel's cave.

Traditionally, petroclival meningiomas have been designated as involving the upper two thirds of the clivus and the petrous ridge anterior to the internal auditory canal (IAC). They frequently invade the cavernous sinus and the Meckel's cave area.

see Meckel’s cave meningioma.

see Meckel’s cave approaches.