In J.R.R. Tolkien’s The Lord of the Rings, the One Ring must be destroyed in Mount Doom.
Mount Doom, also called Orodruin in Tolkien’s invented languages, is the volcano in Mordor where the Ring was originally forged by Sauron. Its fires are therefore the only place capable of undoing the object’s enchantment.
Frodo and Sam reach the mountain after crossing the dangerous land of Mordor. The destruction of the Ring takes place inside its volcanic fissures, but the final moment is complicated by Frodo’s inability to willingly give it up. Gollum’s intervention ultimately causes the Ring to fall into the fire.
Mount Doom is not simply a generic volcano in the story. It is a central symbol of the Ring’s origin and power, and its location links the beginning and end of the great conflict in Middle-earth.