One particular mythic motif is the "swallowing up" of the hero by a large monster. This represents the entry into a mystical world where transformations occur, and the eventual escape represents a spiritual rebirth.
Han and Leia are pursued by Imperial Star Destroyers and TIE fighters as they leave Hoth. To escape, Han flies the Falcon into an asteroid "cave," which turns out to be the mouth of a huge space slug. Here Han and Leia at last open their hearts to love.
Vader also undergoes a change at this point, when he emerges from an egg-like meditation chamber. The Emperor appears to him through a holographic message, and Vader is revealed as a slave to the evil forces of the Empire, rather than as their master.
The Dark Road of Trials || EMPIRE STRIKES BACK || The Sacred Grove