National park enthusiasts will likely be familiar with the writing of Terry Tempest Williams. Her previous book The Hour of Land told national park stories as only she, in her lyrical, insightful, and emotional way, can tell them. Erosion is not explicitly about national parks, though some of the essays lament what has happened to Bears Ears and Grand Staircase – Escalante National Monuments. She has already addressed the challenges of many other parks in that earlier work. The 32 pieces in this book, most of them essays, address a “world being torn to pieces,” being eroded, a condition that brings Williams, at times, to heartbreak.