Contents
Overview
Take the 
Glowing Shard to Falla Sagewind, a tauren standing on top of the mountain that Wailing Caverns is built into, at 48.2, 32.8 in the Barrens. The quest text sends you to Sputtervalve in Ratchet first, but he only gives directions: 
The Glowing Shard is completed with Falla, who then hands you In Nightmares for your faction’s turn-in.
The shard drops from Mutanus the Devourer, the final boss of Wailing Caverns, about 67% of the time according to Wowhead’s loot data. It’s party loot, so when it drops, every member of your group can loot one.
Step One: Sputtervalve
Step Two: Falla Sagewind
Falla Sagewind isn’t found in a town — she’s a tauren standing on top of the very mountain that Wailing Caverns is built into, north of Lushwater Oasis in the Barrens, at 48.2, 32.8.
Turning in to Falla Sagewind completes The Glowing Shard and immediately hands you the follow up quest In Nightmares — there’s no separate trip required to pick it up.
Completing In Nightmares
Completing In Nightmares rewards your choice of 
Talbar Mantle, a cloth shoulder piece, or 
Quagmire Galoshes, a pair of mail boots. Pick whichever actually fits your class and current gear rather than defaulting to one or the other.
Tips & Tricks
Everyone should loot the shard. It’s party loot, so each player in the group can take their own copy, and nobody has to wait for a second run.
Don’t assume the shard drops on your first Mutanus kill. It drops about two times in three, so plan for the possibility of a second attempt.
Turn in to Falla Sagewind before heading back down the mountain. Since she’s literally on top of the dungeon’s own mountain, it’s a short trip worth doing immediately rather than putting off for later.
Check both reward options before choosing. Talbar Mantle and Quagmire Galoshes serve very different gear slots — decide based on what your character actually needs, not just which sounds better.
Alliance and Horde players finish this chain in completely different cities. Don’t expect a shared turn-in location — plan your travel accordingly once you have “In Nightmares” active.
Related Guides
- Wailing Caverns Guide (WoW Classic) — the full boss and mechanics breakdown
- Wailing Caverns Quests Guide (WoW Classic) — every other quest tied to this dungeon