Of Fingon's Fate... and the Silmarils

The wars and wandering of the Gnomes
this tale tells not. Far from their homes                     
they fought and laboured in the North.
Fingon daring alone went forth
and sought for Maidros where he hung;
in torment terrible he swung,
his wrist in band of forgéd steel,                           
from a sheer precipice where reel
the dizzy senses staring down
from Thangorodrim's stony crown.
The song of Fingon Elves yet sing,
captain of armies, Gnomish king,               
who fell at last in flame of swords
with his white banners and his lords.
They sing how Maidros free he set,
and stayed the feud that slumbered yet
between the children proud of Finn.           
Now joined once more they hemmed him in,
even great Morgoth, and their host
beleaguered Angband, till they boast
no Orc nor demon ever dare
their leaguer break or past them fare.             
Then days of solace woke on earth
beneath the new-lit Sun, and mirth
was heard in the Great Lands where Men,
a young race, spread and wandered then.
That was the time that songs do call           
the Siege of Angband, when like a wall
the Gnomish swords did fence the earth
from Morgoth's ruin, a time of birth,
of blossoming, of flowers, of growth;
but still there held the deathless oath,                      
and still the Silmarils were deep
in Angband's darkly-dolven keep.

J.R.R. Tolkien

The Geste of Beren and Lúthien

(lines 1,644 to 1,677)