The Stagnant Oasis is a quest you will receive in the Crossroads in Classic World of Warcraft (WoW).
Your task is to find the Stagnant Oasis and plant the seed in the fissure.
Here’s a walkthrough of The Stagnant Oasis in WoW Classic.
To begin the quest, talk to Tonga Runetotem who is in the Crossroads.
How to find the Stagnant Oasis
You can find this oasis southeast of the Crossroads, and east or southeast of Wailing Caverns.
The exact location is shown in the map below, marked by the player location.
Plant the seed
When you’re there, get to the pond in the middle.
Watch out for the mobs underwater. Dive underwater and look for the fissure causing the bubbles at the bottom of the pond.
Go towards it and plant the seed by interacting with it.
Get back to Tonga Runetotem to claim your reward.