From WoWWiki

The Ruins of Stardust are located in southwestern Ashenvale, south of Astranaar and west of the Talondeep Path. The ruins are situated on a lake island, and several large bog beasts roam the ruins, corrupted by the lake's tainted waters. Much like Iris Lake, the ruins have been exposed to the demonic rot from Felwood, and the area is tinted a sickly yellowish green color. The most notable exception is the stardust shrubs scattered about the area. They are unmarred by the taint, and are known to contain powerful healing properties if imbibed.

Subzones of Ashenvale

Astranaar • Bathran's Haunt • Bloodtooth Camp • Bough Shadow • Demon Fall Canyon • Demon Fall Ridge • The Dor'Danil Barrow Den • Falfarren River • Fallen Sky Lake • Felfire Hill • Fire Scar Shrine • Forest Song • Greenpaw Village • The Howling Vale • Iris Lake • Kargathia Keep • Lake Falathim • Maestra's Post • Moonwell • Mor'shan Rampart • Mystral Lake • Night Run • Nightsong Woods • Raynewood Retreat • The Ruins of Ordil'Aran • The Ruins of Stardust • Satyrnaar • The Shady Nook • The Shrine of Aessina • Silverwind Refuge • Silverwing Grove • Silverwing Outpost • Southfury River • Splintertree Post • The Talondeep Path • Thistlefur Hold • Thistlefur Village • Warsong Labor Camp • Warsong Lumber Camp • Xavian • Zoram'gar Outpost • The Zoram Strand