Kronika’s Keep


 * WARNING:SPOILERS AHEAD FOR MK11*

In short, Kronika's Keep is where Kronika keeps her special hourglass that she slowly enchanted to restart history without Raiden in it. Kronika also probably lived here during the events of all of the Mortal Kombat series, constantly attempting to get Raiden and Liu Kang to fight for Liu to kill Raiden and be the winner of the match, hence Raiden would no longer exist in the main timeline that the real MK series played out. The failure of Kronika's attempts is shown in MK11 when Raiden defeats Liu Kang countless times in many timelines, somewhere past the middle of the story mode.