Ok I just watched the ending to web of shadows so I know that now. However there are multiple questions that rise from this as well. If it's inside mata nui's head then how is there a day and night cycle? Giant lights inside his head? Also in the end of the mask of light it shows takanuva lighting the path to metru nui which is seemingly... Across some sort of body of water (or protodermis, whatever). So the place hali jala and takanuva where standing were they in the head but not on metru nui just looking from some tower? Wow thanks for a fast reply! This really sums it up good! But is the giant hole the light source? And how do they not know they are in.. well a giant cave basically.