Turn in this quest to [npc=135976] at Teller Farm 29.9,40.4. He is East of the area where you picked up and completed the quest, East of Anypoint, South of Corlain, NorthWest of Arom's Stand. Quest turn in indicated won't show up until you get closer to him.
The quest gives a clue where to turn it in: "<One of the Thornspeakers at the Teller Farm would probably recognize what this is.>"
The quest gives: 23g 40s, 16,450 experience, 75 reputation with [faction=2161]
[npc=135976] will have two quests:
A Farmer's Fate Rewards: 23g 40s, 16,450 experience, 75 reputation with [faction=2161]
Lost in the Woods Rewards: 46g 80s, 20,560 experience, 75 reputation with [faction=2161]
Although these are side quests they do give [faction=2161] rep that is required for [achievement=12946] and Battle for Azeroth Pathfinder, Part One that are part of opening up flying in BFA.