Yes, I mean the bog and its underground temple complex. By proxy, I'm referring to any cursed parcel of land believed to be given over to the spirits and the Devil himself, also known as a "Devil's Acre", "Devil's Hopyard", "Devil's Backbone" or "Devil's Den". Do you know the poet J.G. Whittier? He wrote a poem about unhallowed grounds and accursed acreages titled "The Devil's Den", which for me is highly reminiscent of our horrid experience in the damned subterranean upside-down pyramid at Kilmatogh. Read this:
'Tis said that this cave is an evil place
The chosen haunt of a fallen race
That the midnight traveller oft hath seen
A red flame tremble its jaws between,
And lighten and quiver the boughs among,
Like the fiery play of a serpent's tongue;
That sounds of fear from its chambers swell
The ghostly gibber, the fiendish yell;
That bodiless hands at its entrance wave,
And hence they have named it The Demon's Cave.
* * *
Yet is there something to fancy dear
In this silent cave and its lingering fear,
Something which tells of another age,
Of the wizard's wand, and the Sybil's page,
Of the fairy ring and the haunted glen,
And the restless phantoms of murdered men:
The grandame's tale, and the nurse's song
The dreams of childhood remembered long;
And I love even now to list the tale
Of the Demon's Cave, and its haunted vale."