102 APPENDIX. 



the country. Their defences were usually erected on headlands, a snigle wall 

 being carried along the brow of the promontory, while the level approaches were 

 protected by a succession of embankments and ditches, with occasional outworks 

 or advance posts. In some instances, steep, isolated hills were selected, which 

 were defended by a series of concentric embankments, completely encircling the 

 summit ; a method of construction, as we have already seen, most frequently 

 adopted by the Peruvians. 



The subjoined examples of ancient British fortresses, are reduced from plans 

 presented by Sir R. C. Hoare. 



Fig. 32 is situated in the county of Wilts, in the parish of Colerne, near the road 

 leading to Bath, and is known to British antiquaries under the different titles of 

 ''North Wood" and "Bury Wood Camp." "Its shape resembles that of a heart, 

 its pointed part resting in an angle between two streams. Its area comprehends 

 twenty-five acres, and it appears to have had only one entrance towards the S. W., 

 and that placed exactly in the centre of the ramparts, which on this side are double, 

 and rectihnear, the ground being level and must accessible on this side. On the 

 N. W. side, near the outward vallum, but within the area of the camp, is a small 

 earthen work («), single ditched, with an entrance to the west." — (Ancient Wilt- 

 shire, Vol. II., p. 104. 



Fig. 33 is situated in the same section of country with the work just described, 

 in the vicinity of Castle Combe, from which it is named. " It is placed," says 

 Hoare, " in a very strange and picturesque situation, on the point of a very steep 

 hill, at whose base flows a rapid brook. It is very difficult of access. The foun- 

 dation of walls, a raised mound, and other circumstances induce me to attribute to 

 it a Saxon origin ; and history reports its having been ravaged by the Danes. Its 

 area is eight and a half acres ; its form is rather oblong, but wider towards the 

 north, where the ground is most easy of access, and where the adit into the camp 

 has been placed. On entering the work at this point, and proceeding towards the 



