Walter Savage Landor - Separation

THERE is a mountain and a wood between us,
Where the lone shepherd and late bird have seen us
   Morning and noon and eventide repass.
Between us now the mountain and the wood
Seem standing darker than last year they stood,
   And say we must not cross--alas! alas!

Walter Savage Landor

http://www.poemhunter.com/poem/separation-2/