Whilst a farmer was removing some of the stones from the north east side of the larger carnedd to employ them in his repairs he came to the mouth of a passage covered with a square stone similar to that at Plas Newydd, anxious to reap the fruits of his discovery he procured a light and crept forward on his hands and knees along the dreary vault, when lo! in a chamber at the further end a figure in white seemed to forbid his approach.He then mentions a 'tribe of immense spiders who have reigned here unmolested for ages' so that's put me right off, far more than any talk of spirits.
The poor man had scarcely power sufficient to crawl backwards out of this den of spirits as he imagined however in the course of a few days instigated by the hopes of riches and the presence of many assistants he made his second entre into the cavern and finding the white gentleman did not offer to stir he boldly went forward and discovered the object of his apprehensions was no other than a stone pillar about six feet in height standing in the centre of the chamber.
His former consternation could now only be exceeded by his eagerness to see what was contained beneath the stone which he shortly overturned but treasure there was none, some large human bones lying near the pillar sufficiently testifying the purpose for which the structure was intended.
This is the substance of the account we received from the young man whose father was one of Colonel Peacock's labourers and on the premises at the time of the discovery. The superstition of the common people still suppose this to be the habitation of spirits.
Our two conductors seeming rather to compliment each other about precedence I took the lanthorn and [crawled in].. my companions followed close at my heels.
From the fearless Rev. John Skinner's 'Ten Days' Tour through the Isle of Anglesey' (1804).