<P> In Norse mythology, Mjölnir (/ ˈmjɔːlnɪər /; Old Norse: Mjǫllnir, IPA: (ˈmjɔlːnir)) is the hammer of Thor, the Norse god associated with thunder . Mjölnir is depicted in Norse mythology as one of the most fearsome and powerful weapons in existence, capable of leveling mountains . In its account of Norse mythology, the Prose Edda relates how the hammer was made by the dwarven brothers Eitri and Brokkr, and how its characteristically short handle was due to a mistake during its manufacture . Similar hammers (Ukonvasara) were a common symbol of the god of thunder in other North European mythologies . </P> <P> Old Norse Mjǫllnir / ˈmjɔlːnir / regularly becomes Mjøllnir / ˈmjœlːnir / in Old Icelandic by the 13th century . The modern Icelandic form is Mjölnir, Norwegian and Danish Mjølner, Swedish Mjölner . </P>

What is the name of thor s hammer