Ah, I thought of Elfstan but thought I'd already guessed Elfstone and not been told I was close.
And I had. But for a different clue.
And I hadn't worked out what 'indefinitely' meant. Very clever!
3. RANA certainly gleams, but I'm not sure its name does. And is it technically 'beyond the circle(s)' of the world?
I was looking for something beginning with RAM for the beast, but no luck there.