Stow Grid - Threatened

Spindle Hill, at the end of Gates Lane, Stow is the best example of a grid that I know. As a refresher, the site looks something like this (numbers are in 'paces'):

Now I hear the town has marked the edge of this area with tape. Why would they do that? The land on the other side of the tape is private.

Please contact someone you know in Stow and ask them to help get this site better protected.