From WoWWiki

Ban'ethil Hollow is a small ravine in Teldrassil south of the road that leads from Dolanaar to Darnassus. The hollow is filled with hostile Furbolgs who will occasionally ambush adventurers on the road. It is wise to exercise caution when traveling. The Ban'ethil Barrow Den is located in the back of the hollow.

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