The Faëry Chasm

No fiction was it of the antique age:
A sky-blue stone, within this sunless cleft,
Is of the very foot-marks unbereft
Which tiny Elves impressed;--on that smooth stage
Dancing with all their brilliant equipage
In secret revels--haply after theft
Of some sweet Babe--Flower stolen, and coarse Weed left
For the distracted Mother to assuage
Her grief with, as she might!--But, where, oh! where
Is traceable a vestige of the notes
That ruled those dances wild in character?--
Deep underground? Or in the upper air,
On the shrill wind of midnight? or where floats
O'er twilight fields the autumnal gossamer?