From WoWWiki

Gnarlpine Hold lies in the far southwest corner of Teldrassil. It is home to the Gnarlpine furbolgs. The Gnarlpines, lead by the powerful Ursal the Mauler, have abducted several Druids of the Claw and hold them in thrall.

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