From WoWWiki

Iris Lake is located in north-central Ashenvale, east of Astranaar and west of Shael'dryn's moonwell. It is one of the many areas of the night elven forest which has fallen to the corruption of Felwood. The water of the lake is a sickly yellowish green, and twisted bog beasts roam the area, attacking anyone who come here seeking one of Elune's Tears.

The coordinates to the center of the lake is 46,46. Approach from the southwest via the trail running along the mountainside.

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