The Skarpåker Stone, designated by Rundata as Sö 154, is a Viking Age memorial runestone that originally was located in Skarpåker, Nyköping, Sörmland, Sweden. It dates to the early eleventh century.

In Norse mythology, Ragnarök is a foretold series of impending events, including a great battle in which numerous great Norse mythological figures will perish ; it will entail a catastrophic series of natural disasters, including the burning of the world, and culminate in the submersion of the world underwater. After these events, the world will rise again, cleansed and fertile, the surviving and returning gods will meet, and the world will be repopulated by two human survivors, Líf and Lífþrasir. Ragnarök is an important event in Norse mythology and has been the subject of scholarly discourse and theory in the history of Germanic studies.