The Lake of Rage (Japanese: いかりのみずうみ Lake of Rage), also known as Gyarados Lake, is a location in Johto. It is located just north of Mahogany Town, connecting it with Route 43, making it the northern-most accessible point of the Johto region. A large lake spans the area of the Lake of Rage, with a few residents living nearby. It is said to be the largest lake in the region. West of the lake lies a labyrinth of trees, which hides a house.
It is said the Lake of Rage was created the last time many Gyarados got together and stirred up a storm. The crater that remained filled with rainwater and became the Lake of Rage. In the middle of the lake dwells a shiny Gyarados. The Lake of Rage was considered a dangerous place to go, as the red Gyarados started tipping over boats and scaring swimmers.