<P> With Sauron 's assistance , the Elven - smiths forged the Rings of Power , which conferred great power upon their bearers . He then secretly forged the One Ring in the volcanic Mount Doom in Mordor . This `` One Ring to rule them all '' had the power to dominate the other Rings and enslave their wearers to Sauron 's will . The Rings of Power were extremely potent , however ; to create an instrument that could dominate even them , Sauron was forced to transfer a great part of his native power into it . Yet `` while he wore it , his power on earth was actually enhanced '' . </P>
who has a ring of power in lotr
Sauron