A second source of clues come from the Sky Temple Gateway, where A-Kul foresaw the locations of the fallen Keybearers and led messages regarding where to find the Keys they retrieved. The key hunt can begin relatively early (after Samus finds the Dark Visor), but can only be completed after gaining the Light Suit, as some Keys are hidden either behind Light warp spots or under poisonous water. The Keys are located in the following zones: