The Lake of Nine is located roughly in the center of Midgard, and as such it serves as a hub to where other areas in Midgard can be accessed. Along the coasts of the lake are the eight realm towers, with Tyr's Temple at the center.
When Kratos and Atreus first visit the lake, much of it and the surrounding coasts are flooded due to Jörmungandr's presence. Upon awakening the serpent, it pulls itself to rest alongside the nearby cliffs, causing the water level to drop significantly.
- The "Nine" in the title likely refers to the Nine Realms.