Deepholm is an earth elemental-infested zone in the heart of the Maelstrom in WoW Cataclysm Classic. There are plenty of unique quests to complete in Deepholm, but many players struggle to complete the One With the Ground quest.

This quest asks you to complete the One With the Ground ritual, but the quest description and instructions are unclear. Here's how to start and complete the One With the Ground quest in WoW Cataclysm Classic.

You can start the mission One With the Ground by interacting with Slate Quicksand in the southern part of Deephom at coordinates 27, 44.

Once you accept the quest, you will dig underground and need to reach Avalanchion's Vault. To do this, go through the southern part of the map to the west until you reach the cave at coordinates 43, 81. Follow the path inside and you will complete the quest when you reach the end of the cave. Don't worry about the enemies around you, they won't get aggressive even if you walk right through them. The goal of the quest is to reach Avalanchion's lair without alerting him.