From WoWWiki

Nightsong Woods is the largest bulk of Ashenvale forest, stretching from just east of Astranaar in the west, all the way east to Azshara.

This is where most of the heavy cross-faction fighting occurs, and where the Warsong Clan and the Silverwing Sentinels have their holdings. The Falfarren River runs through the Nightsong Woods, roughly dividing it into a western Alliance-aligned part, and an eastern Horde-aligned part. The most notable settlement in Nightsong is Splintertree Post, which is the the center of operations for Horde in the region, although the draenei and night elven outpost of Forest Song has recently risen to prominance. The southern reaches of the woods have experienced widespread deforestation at the hands of the Warsong orcs.

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