How do you get a shiny Gyarados in Pokemon Gold?

In Pokémon Gold, you can get a shiny Gyarados by encountering the red Gyarados at the Lake of Rage. This specific Gyarados is a guaranteed shiny, making it different from regular encounters. To find it, simply head to the Lake of Rage, where you'll find it at level 30, ready for battle. Defeating or capturing it will add this iconic shiny Pokémon to your collection.