Her arms, and flung the foam from off her locks,
Laughed, and the sound was answered by the rocks.
They had gained a central realm of earth again,
But looked for tree, and field, and sky, in vain.120
Around she pointed to a spacious cave,
Whose only portal was the keyless wave,[403]
(A hollow archway by the sun unseen,
Save through the billows' glassy veil of green,
In some transparent ocean holiday,
When all the finny people are at play,)