The Key of C-Rch (also known as Sky Temple Key 6) is the sixth Sky Temple Key required for access to the Sky Temple in Metroid Prime 2: Echoes. In the abyss part of the Hive Dynamo Works in the Ing Hive, Samus must climb the Spider Ball Track to her right upon entrance, and boost onto two Luminoth sentry pods to a ledge on the other side. From here, she must climb another Spider Ball Track to a higher ledge, find the Flying Ing Cache and destroy it, obtaining the Key. The Key can be obtained before the Light Suit to save time.