TYPES OF ANCIENT BRITISH EARTHWORKS. 69 



ward, are continued as far as the security of the Station 

 required. Those on the north are soon rendered unneces- 

 sary by the rock, which is there precipitous. Those on 

 the south are gradually blended into the natural declivity 

 of the hill, which is nearly as steep as the rampart itself. 

 There can be no doubt but that these ramparts were 

 originally walls of dry masonry erected on the ßide of the 

 trenches from which the materials were taken. There is, 

 however, no appearance of walls by the trenches to the 

 east of the main rampart, which were probably intended to 

 render the level ground on that side more difficult to an 

 invading force, while the stones taken from them furnished 

 materials for the immense ramparts of that part, which I 

 may be allowed to call the keep of the place, which is a 

 rectangular space, strongly defended on three sides, imrae- 

 diately witkin the eastern rampart, and divided from the 

 western part of the fortification by a trench cut in the 

 solid limestone. At the south-western angle of this rec- 

 tangular space was the main entrance, strongly defended 

 by flanking works and platfbrms, constructed on the outer 

 face of the rampart. There was also a smaller entrance at 

 the north-eastern angle. On the south side the fortification 

 extended from the western rampart to the extremity of 

 the hill. On the north the rock is precipitous. It was 

 artificially fortified wherever the nature of the ground 

 required. At the north-western extremity was a third 

 entrance, defended by an outwork, and several small walls 

 ran along the south side of the hill. From the main 

 entrance a strong rampart extends to the east to the 

 distance of a few hundred yards, and, turning to the north, 

 crosses the ridge of the hill to the east of the trenches 

 before mentioned, dividing, apparently, the main fortifica- 

 tion from the outer enclosure, formed by a similar rampart, 



