From WoWWiki

Fel Rock is a corrupted cave in Teldrassil. This hauntingly beautiful cave lies just north of Dolanaar and is infested with many grells. It is also home to the vicious satyr Lord Melenas. The night elf druid Tallonkai Swiftroot sends players into this foreboding cave to destroy Lord Melenas during the quest  [7] Twisted Hatred.

Denizens

• Lord Melenas
• Threggil
• Shadow Sprites
• Rascal Sprites
• Vicious Grells
• Dark Sprites

Subzones of Teldrassil
Aldrassil • Ban'ethil Barrow Den • Ban'ethil Hollow • The Cleft • Darnassus • Dolanaar • Fel Rock • Gnarlpine Hold • Lake Al'Ameth • The Oracle Glade • Pools of Arlithrien • Rut'theran Village • Shadowglen • Shadowthread Cave • Starbreeze Village • The Veiled Sea • Wellspring Lake • Wellspring River