Crystal mines

"You can start with this thing I found near the crystal mines."

- Jost Ellon, to R2-D2 and C-3PO in reference to his Ranger X-1

The crystal mines were a location on the planet Dodz whose pioneers protected themselves with a Ranger X-1 defense droid, which Jost Ellon later found inert near the mines.

Behind the scenes
The crystal mines were first mentioned in Star Wars Droids 1: The Destroyer, the first issue of the Star Wars Droids comic series published by Star Comics, an imprint of Marvel Comics, which was first published on April 1, 1986.

Appearances

 * Star Wars Droids 1: The Destroyer