What is the ‘Thor’s Hammer’?

‘Thor’s Hammer is the hammer of Thor, a hammer-wielding god associated with thunder, lightning, storms, oak trees, strength, destruction, fertility, healing, and the protection of mankind. Thor is a major god associated with thunder in Norse mythology. Distinctively shaped, Mjollnir is depicted in Norse mythology as one of the most fearsome weapons, capable of leveling mountains. Though generally recognized and depicted as a hammer, Mjollnir is sometimes referred to as an axe or club.