Sorry... We've had a houseguest the past week (and she'll be here for at least another week) and now everyone is sick...
You shouldn't have to search the entire planet. The location of the old base would be known to most locals (and Imperials).
Dantooine- Astronavigational Data: Dantooine System, Raioballo Sector, Outer Rim Territories
- Orbital Metrics: 378 days per year / 25 hours per day
- Government: Tribal, Oligaracy
- Population: 334,000 (35% Human, 18% Dantari, 47% Other)
- Languages: Basic & Dantarian
- Terrain: Ocean, Savanna, Mountain, Grasslands, Steppes
- Major Cities: Mosa Risin, Mos Ayedu
- Major Exports: Foodstuffs
- Major Imports: Technology, Luxury Items
- Trade Routes: Myto's Arrow
There appears to be a strong Imperial presence in Mos Ayedu, though they do not appear to be especially worried about Rebel activity.