In Tir--the Welsh word for "land"--writer and ecologist Carwyn Graves takes us on a tour of seven key characteristics of the Welsh landscape. He explores such elements as the ffridd, or mountain pasture, and the rhos, or wild moorland, and examines the many ways humans interact with and understand the natural landscape around them. Further, he considers how this understanding can be used to combat climate change and improve wildlife populations and biodiversity.

By diving deep into the history and ecology of each of these landscapes, we discover that Wales, in all its beautiful variety, is just as much a human cultural creation as a natural phenomenon: its raw materials evolved alongside the humans that have lived here since the ice receded.