CLASS A. 



Fortresses partly inaccessible by reason of precipices, cliffs or water, de- 

 fended in part only by artificial works. 



[shire.* 

 e.g. — St. Keverne.Arrowan, Cornwall.* Dike Hills, Dorchester, Oxford- 



Markland Grips, Derbyshire.* 

 Cleeve Hill, Gloucestershire.* 



Old Castle Head, Pembrokeshire. 



Danes' Dyke, Flamborough,York- 

 [shire. 



Scale of Yards. 



IOO 2O0 SCO 400 500 



Dorchester . Oxfordshire . 



* See plans. 



