
CLASS A. 
Fortresses partly inaccessible, by reason of precipices, cliffs 
or water, additionally defended by artificial banks or 
walls, 
e.g.—Comb Moss, Derbyshire.* 
Old Castle Head, Pembrokeshire. 
Treryn Dinas (Logan Rock), Cornwall. 
Doward Hill, near Monmouth. 
Dike Hills, Dorchester, Oxfordshire. 
Cleeve Camp, Gloucestershire.* 
 * See plans on following pages. 
