8. There appear to be no remains of the _geweorc_ on the river Lea, 20 miles above London, made by the Danes in 896. But 20 miles above London, on the Lea, would land us at Amwell, near Ware. In Brayley's _Hertfordshire_ it is stated that at Amwell, "on the hill above the church are traces of a very extensive fortification, the rampart of which is very distinguishable on the side overlooking the vale through which the river Lea flows."[129] [Illustration: FIG. 6. Shoebury, Essex.] 9. BRIDGENORTH, or Quatbridge.--The Winchester MS. of the _Chronicle_ says the Danes wrought a _geweorc_ at Quatbridge, in 896, and passed the winter there. There is no such place as Quatbridge now, only Quatford; and seeing there were so few bridges in those days, we are disposed to accept the statement of the Worcester MS., which must have been the best informed about events in the west, that Bridgenorth was the site of their work, especially as the high rock at Bridgenorth offers a natural fortification. The only circumstance that is in favour of Quatford is that it is mentioned as a _burgus_ in Domesday, which shows that it possessed fortifications of the civic kind; and we shall see later on, that such fortifications were often the work of the Danes. But this burgus may more probably have been the work of Roger de Montgomeri, who planted a castle there in the 11th century. 10. TEMPSFORD.--Here the Danes wrought a work in 918.[130] There is a small oblong enclosure at Tempsford, still in fair preservation, called Gannock Castle, which is generally supposed to be this Danish work. The ramparts are about 11 or 12 feet above the bottom of the moat, which is about 20 feet wide. There is a small circular mound, about 5 feet high, on top of the rampart, which appears to be so placed as to defend the entrance. This mound is "edged all round by the root of a small bank, which may have been the base of a stockaded tower."[131] This curious little enclosure is different altogether from any of the Danish works just enumerated, and it is difficult to see what purpose it could have served. The area enclosed is only half an acre, which would certainly not have accommodated the large army "from Huntingdon and from the East Angles," which built the advanced post at Tempsford as a base for the forcible recovery of the districts which they had lost.[132] Such a small enclosure as this might possibly have been a citadel, but our knowledge of Danish camps does not tell us of any with citadels, and it is hardly likely that the democratic constitution of these pirate bands would have allowed of a citadel for the chief. It is far more probable that this work belongs to a later time, and that the Danish camp has been swept away by the river.[133]