From publisher blurb:
A fortified ridge. Its bosky slopes are topped with archaic forts raised from the rubble of a wall long ago fallen, all now retaken as final bastions by a people in flight. Camps below grow as folk stream in.
Condensed to one page for slipping in among other materials, this sandbox-oriented content is intended as an easily absorbed framework for improvisation to be adapted by the user as preferred for a wider setting and specific system.
It presents core ideas and key numbers to fall back on, with general approaches that can be applied in other situations.
The content covers map generation on the fly for an abstracted ridge as well as suggestions for aspects of the locality, including departees, possessions, activities, fort structure and a destructive residue.
The forts and their drains could be simplified or extended using elements from Landscape: The Manse and maybe one or more of the maps also in the Location, Landscape & World bundle, most obviously The Noxious Ponds.