From publisher blurb:
A hazy massif. Its humid airs swirl over high calderas, amid volcanic peaks of shifting root. Tremors rise from far below its valleys, shaking the wary. For some heed.
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 massif as well as suggestions for aspects of the locality, including a people, their myth, expeditions below, fumaroles and a possible return.
The spaces within the massif could be extended using one or more of the maps in the Location, Landscape & World bundle, possibly The Great Pit, The Arid Gash and The Vermian Maze.