Cenarion Refuge

From wow.incgamers.com

The Cenarion Refuge is the first little outpost for the Cenarion Expedition you'll reach when venturing into Zangarmarsh from Hellfire Peninsula. There are quite a few quests to be found here, as well as the ancient trees Ashyen and Keleth who give you a couple of very nice buffs once you've reached friendly with the Cenarion Expedition.