A white scrawl on the endless black
Rolls the stone aside. I crawl through the gloom
Of the long stone passage, empty and cold,
Shrugging off fear, towards the tomb.

And then I stand in the home of the dead –
The chamber is high and cold and stark
But once each winter the sun blazes in
And a scribbled poem flares in the dark

Maes Howe on the Orkneys is a Neolithic passage tomb.
It consists of a low stone corridor leading to a high
chamber with recesses for the bones of the dead. There
is a fissure in the roof, through which at the winter solstice
the sun briefly illuminates the chamber.