This song has always had a wild, Artemisian feel to me:

One old new moon, as sister, cast a beam
This newest moon, as rock, casts only shadow

What speed westward, could stop her being swallowed by the hills?
Which of all the fairest sounds, between this rock and ours,
Casts anything but memory?

Haunted is an easy word for all these moons
And every sound below.