This cache is located within Robbins Island Park. This cache is winter friendly, but may be inaccessible during high water in summer if you are planning on walking out to it on the point. Just a warning to those who attempt this in the winter: be careful when walking out on the ice to this cache. When I did that my right foot fell through in the marshy area near shore. I would suggest taking a poking stick with you if you are attempting this in the winter. Grunty Industries is the sixth level in the game. It is a polluting factory full of dangerous machinery. Mumbo's spell is "EMP", which can disable certain machines, but only temporarily. Wumba's transformation is "Washing Machine" (a humorous nod to the first game), which can access mechanical-only areas of the world, launch underwear at enemies, wash clothes, and is resistant to lava. However, he is prohibited to warp while transformed. The boss is Weldar, a giant near-sighted welding torch. Grunty Industries has the fifth train station, and the main building can only be entered using the train station.