%0 Book Section %B Archaeology and GIS: a European perspective %D 1995 %T Cumulative Viewshed Analysis: a GIS-based method for investigating intervisibility and its archaeological application %A Wheatley, David %E Lock, G. %E Stancic, Z. %C London %I Routlege %K viewshed analysis line of sight cva landscape landscape viewshed %U http://www.soton.ac.uk/~dww/Cumulative/