By the side of this Trackway, in the parish of Sulgrave, and seven miles and a half N.E. by E. from Banbury, is a Tumulus or Barrow still called Barrow Hill, the use of which as an exploratory mount may be correctly conceived from Morton's description of it. Here, he says, "no fewer than nine counties do present themselves to one view, that is, the counties of Northampton, Warwick, Worcester, Oxford, Gloucester, Berks, Bucks, Bedford, and Hertford; and 'tis thought that a part of Wiltshire or Hampshire is likewise to be seen from thence."*
*Morton's Northamp., 1712, p22
The base of this Tumulus is 25 yards by 19, and the summit 12 yards by 10. Upon it grows a great Ash tree, now going to decay, which is considered to be four centuries old.
There is a tradition respecting this mount and the Ash tree, that the spot was the scene of the revels of witches, and that when the Sulgrave people went to cut the tree down, they saw their village in the vale beneath apparently wrapped in flames, and therefore returned home. While they were absent from the tree on this false alarm, the witches made good the injury that had been done to the tree, and thus it was preserved.
p16 in 'The History of Banbury' by Alfred Beesley [1841?] (online at the Internet Archive).
Visited here today on a gloriously sunny Bank Holiday weekend.
Access is fairly straighforward. On the road just sough of the camp, it's possible to pull in by a marked bridleway. Follow the bridleway two fields north, then turn right. The camp is laid out in front of you, enclosed by a fence and gate.
Beware if sheep are in the enclosure (as they were today), as the gate does not meet properly, and it's not possibile to secure it shut - remember the country code?
The camp itself is as JackSprat says, quite impressive in its size. The bank and ditch are still very well defined for the most part.
A most worthwhile stop on what was a pleasant BH drive.
Daventry, a market town near the Warwickshire border, carries on a considerable manufactory of silk stockings, and of whips. Its horse fairs are frequented by dealers from all parts of the kingdom.
Near the town is Borough-hill, a remain of antiquity of great note, being probably the largest encampment in the island. It is commonly called Dane's Hill, but the real authors of it are uncertain.
p201 of 'England Described: Being a Concise Delineation of Every County in England and Wales' by John Aiken (1818).
JACKSON'S PIG.
"It's gone over Borough Hill (an extensive Roman encampment near Daventry) after Jackson's pig."
A common phrase in that neighbourhood when anything is lost.
From p354 of 'Glossary of Northamptonshire Words and Phrases' By Anne Elizabeth Baker (1854). Online at Google Books.
In this parish, to the south of the village, is a spacious valley called Danes-moor, or Duns-more, where, it is said that a sanguinary conflict took place between the Danes, who had in great force encamped on the heights of Rainsborough, and an army of Saxons collected to oppose their depradations. But as this is not mentioned in the Saxon Chronicle, it merely rests upon tradition. Greater credibility attaches to the account of a battle fought here between the leaders of the two contending factions for the houses of York and Lancaster..
p74 in volume 11 of 'The Beauties of England and Wales, Or, Delineations, Topographical, Historical, and Descriptive' by John Britton (and others), published 1810.
~Online at Google Books.