This is a representation of the magic hammer of the thunder god, Thor. Mjolnir produced lightning bolts
and was Thor's indispensable weapon against the enemies of gods and men.
With it he was invincible in battles with frost giants,
mountain giants, hill ogres, trolls and other monsters
and demons that threatened heaven and Earth.
After being thrown the hammer would return to Thor's hand.
The Norse people believed that when the ground was struck by lightning
Thor had sent his hammer crashing to the earth