In the final section of Negro Mountain, C. S. Giscombe writes, "Negro Mountain--the summit of which is the highest point in Pennsylvania--is a default, a way among others to think about the Commonwealth." Named for an "incident" in which a Black man was killed while fighting on the side of white enslavers against Indigenous peoples in the eighteenth century, this mountain has a shadow presence throughout this collection; it appears, often indirectly, in accounts of visions, reimaginings of geography, testimonies about the "natural" world, and speculations and observations about race, sexuality, and monstrosity. These poems address location, but Giscombe--who worked for ten years in central Pennsylvania--understands location to be a practice, the continual "action of situating."

The book weaves through the ranges of thinking that poetic voice itself might trouble. Addressing a gallery of figures, Giscombe probes their impurities and ambivalences as a way of examining what languages "count" or "don't count" as poetry. Here, he finds that the idea of poetry is visionary, but also investigatory and exploratory.