Cato Neimoidia/Legends

One of the Neimoidian 'purse-worlds', Cato Neimoidia is the location of Nute Gunray's secret redoubt. Towards the end of the Clone Wars, the Republic launched an attack on the fortress, led by Jedi Knights Obi-Wan Kenobi and Anakin Skywalker. (This battle takes place in Labyrinth of Evil, by James Luceno.)

Image : (from StarWars.com)