Figure 1a - Linear boundary systems, Types 1 & 2. (The Cleave Dyke system; after Spratt 1982)
Figure 1b - Linear boundary systems, Types 1, 2 & 3. (Hexagons represent hillforts; after Palmer 1984)
- Specimen ground plans of the main types of prehistoric linear boundary (A - Evans and Vaughan 1985; B & C - Spratt 1989)