From A Shropshire Lad by AE Housman

On moonlight heath and lonesome bank
The sheep beside me graze;
And yon the gallows used to clank
Fast by the four crossways.

A careless shepherd once would keep
The flocks by moonlight there,*
And high amongst the glimmering sheep
The dead man stood on air.

* Hanging in chains was called keeping sheep by moonlight.