[dancing spawn of ungoliant]

You came up with a rather tricky cryptic clue, Arestevana.

If the road "goes ever on and on", how else might you describe it?

Umm, long? Tiring? Eternal? A blister in your toe?

And then there's that "hears ocean following" part. Should I search synonymes for ocean? How about sea, deep or brine? On the other hand, an ocean can rush, swish, roar or din... Another hint wouldn't hurt.