This mini-level is on the first level of Chewbacca's campaign (Liberating his home planet) Now, you can rescue Wookies from the Trandoshan Slavers, and there are 4 workers who you can save. As you have no resources they're useless. But, if you cheat to get resources, clear the map and advance to tech level 3 at least, build an airbase and some sort of aircraft, this secret will be avalable. Fly your aircraftt over to the area in a ring of trees which on your mini map shows up as sand. There will be a landed Royal starship, Captain Panaka and Obi-Wan Kenobi. When you fly over them, they will join your side and you get a new objective to rescue the Queen from the Tusken Raiders. This sounds far-fetched, but it's true! Also, when you rescue her, and get her back to the starship, Anakin Skywalker, Qui-Gon Jinn and R2 D2 with appear and you have to fight Darth Maul.
Contact the author, Miles at firstname.lastname@example.org.