When I wrote my _Itinerary_, I travelled a good deal of the _Hermen-street_ road, and the _Foss_ road, having Mr. _Samuel Buck_ in my company. At that time I engag’d him to take in hand the work, which he has so laudably pursued, and sav’d the remembrance of innumerable antiquities in our island, by that collection of elegant prints which he has publish’d. When we were on the banks of the _Humber_, the name of _Barrow_ invited my curiosity, and it was fully answer’d, by finding that most noble antiquity there of the old Druids, upon the _marsh_, call’d _Humbers castle_. A rivulet rises near the town of _Barrow_, and when it falls off the high ground, and enters on the level marshes on the _Humber_ shore, it turns a mill. Just there, upon the edge of the marsh, upon a gentle eminence, nearly overflow’d by high spring-tides, and between the salt and fresh water, is the work we are to speak of, made of great banks of earth thrown up, in an odd manner, which gives it the denomination of castle. I observ’d all about it, and in the adjacent marshes, many long _tumuli_ of different sizes, but all of a particular shape, such as I had never seen elsewhere, being form’d like a bed. I immediately set to work in digging into several of them, and we found burnt bones, ashes, bits of urns, and such kind of matters, all extremely rotten and decay’d; and the very same appearances as I had so often seen, in digging the barrows about _Stonehenge_ and _Abury_. This satisfied me that the work must belong to the most ancient inhabitants of the island, notwithstanding its unusual form. And when I attentively consider’d those banks, and made a plan of them, I was very agreeably surpriz’d in discovering the purport and meaning, which was to represent the _circulus alatus_ or winged circle, an ancient hieroglyphic well known to those more particularly conversant with _Egyptian_ monuments; and what they rightly call the symbol of the _anima mundi_, or _spirit pervading the universe_; in truth, the divine spirit. I had no hesitation in adjudging this to be a temple of our Druids. All reasons imaginable concurr’d. Tho’ instead of stones, they have made this work with mounds of earth; I suppose for want of stones, lying on the surface of the ground. It makes the third kind of the Druid temples which I proposed to describe. The vertical line of it is north-east and south-west, the upper part being directly north-east; and the barrows generally conform to this line, being either upon it, or at right angles with it; the head of the barrow sometimes one way, sometimes the other. The circle was 120 cubits in diameter. The wings 100 cubits broad, 150 long; but the eastern wing was more extended than the other. For the design of it is somewhat in perspective, as ’tis sometimes seen on _Egyptian_ antiquities.