Even weirder, it is actually a song about the Hound of the Baskervilles. Here's Google's attempt at a translation. You'll get the drift, anyway. While it is weird, it is certainly not the worst Sabbath cover I've ever heard, that's for sure.
Mist draws in thick swaths
across the sea from Forest Hill,
spooky green grins a will,
It is night in Baskerville.
Those who spread fear and terror,
who destroyed what he wants?
Everyone tries to hide
before the Hound of the Baskervilles.
Whom it is obtained,
this Hound of the Baskervilles, oooh yeah,
has erloren
in the struggle for Baskerville, oooh yeah!
And it dares no soul
into the dark moor,
everyone fears for his life,
Who will be next?
Soon, the mission is completed,
the Lord gave him to be mad,
silently as he had once been
he sneaks down into the bog.
Fog is settling in dense clouds
across the sea from Forest Hill,
and hides the Räsels questions
of the Hound of the Baskervilles.