Riddle Me This

Forgot the answer to this

"There is a small dusty cave where the passage of time has seemed to stop.
There is a sense of power about the place. On one wall you see enscribed in runes
and glyphs of power: Hobbit murderer.
The essence of power seems to await just a one or two word answer to the riddle...
"

Anyone can help ?

b.e.
e-mail yes, browsing, no