During the time of the Geonosian rule, much of the planet's architecture was similar in appearance to termite mounds, consisting of domes and buildings built into caverns and rock spires.

-taken from the wookiepedia-

With this in mind, I think its Geonosis

EDIT:

Its definitely Ryloth, cos when you look at http://www.game-monitor.com/search.php? … er=players you can see the map Battle at Ryloth playing on the test server occaisonally