Dagobah is a fictional planet in the Star Wars films The Empire Strikes Back and Return of the Jedi. It also appears in a deleted scene from Revenge of the Sith.
Dagobah, in the Sluis sector, is a world of murky swamps, steaming bayous and petrified gnarltree forests. The ubiquitous white spiders that roam the swamps are actually newly-sprouted seedlings of the gnarltrees that will take root and grow.
Jedi Master Yoda went into exile on Dagobah after the fall of the Republic and the destruction of the Jedi Order.