Before the hill's high altar bowed,
The trees are Druids, weird and white,
Facing the vision of the light
With ancient lips to silence vowed.

No certain sound the woods aver,
Nor motion save of formless wings—
Filled with phantasmal flutterings,
With thronging gloom and shadow-stir.

Unseen, unheard, amid the dell
Lie all the winds that mantic trees
Have lulled with crystal warlockries
And bound about with Merlin-spell.