…through corridors of carven dread
whose turns were lit by lanterns hung
or flames from torches that were flung
on dragons hewn in the cold stone
with jewelled eyes and teeth of bone.

Then sudden, deep beneath the earth
the silences with silver mirth
were shaken and the rocks were ringing,
the birds of Melian were singing;
and wide the ways of shadow spread
as into arched halls she led
Beren in wonder.

There a light
like day immortal and like night
of stars unclouded, shone and gleamed.
A vault of topless trees it seemed,
whose trunks of carven stone there stood
like towers of an enchanted wood
in magic fast for ever bound,
bearing a roof whose branches wound
in endless tracery of green
lit by some leaf-imprisoned sheen
of moon and sun, and wrought of gems,
and each leaf hung on golden stems.