From this thread:

Can anyone help me with a lyric. It goes to 'Danny Boy' aka 'The Londonderry Air' aka 'The Lament for Cuchulainn', and contains the following lines:

Oh softly sleep, the raging hills of sorrow,
Oh softly sleep, the gentle vales of pain,
As those who know they have no more tomorrow
But yet must rise to face the dawn again.

Author, rest of words, any information please.

Best wishes,

Barrie Roberts.