The most significant feature determining landholdings are the ditches of
the Jamestown area. During the 1954-56 explorations 63 ditches were
added to the 33 previously discovered, thus increasing the opportunity
to delineate property lines, many of which used to be bounded by such
ditches.
[Illustration: CAREFUL EXCAVATION WAS REQUIRED TO IDENTIFY THE FILL OF
LONG-OBLITERATED DITCHES ONCE DRAINING FIELDS AND MARKING PROPERTY
BOUNDARIES.]