Mining Is The Key is the Heroic Challenge provided by Ignitor and takes place in TheMines. In order to clear the level, Skylanders must grab the pickaxe they find the start and use it to find keys embedded in the rocks around them by digging into them. Upon unlocking the final gate, the player finds a cross-shaped charm awaiting them. Earth Skylanders and have the benefit of being able to break the rocks more quickly without the pickaxe. Rhu-Barbs/Trog Pinchers are a common sight, as well as Bone 'n' Arrows/Drow Archers and Trogmanders.