Three Rings for the Elven-kings under the sky,
Seven for the Dwarf-lords in their halls of stone,
Nine for Mortal Men doomed to die,
One for the Dark Lord on his dark throne
In the Land of Mordor where the Shadows lie.
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the Land of Mordor where the Shadows lie.

 Mordor is Sauron’s land and the place where the One Ring was forged. The only chance for the heroes of  The Lord of the Rings  to destroy the One Ring is to throw it in the fires of Mount Doom where it was forged.