The Space Time Rift near Centre Nui Falls was created by the combined power of Khrome and Dimen, they left in it for 50 years, after that they returned and Dimen was betrayed and kicked into the rift by Khrome, The two pillars outside the rift, named "The Pillars of Space-Time" by the Matoran, have on top of them Khrome's and Dimen's Kanohi, to keep the rift open, the rift leads to Nowhere, a dark and mysterious universe where the Ogg is kept.