At the Source reflects upon a writer's deep inheritance of language, myth and nature. Her creative journeys begin from those sources. The book opens with a house, Blaen Cwrt. A river rises, a tributary which will flow on to the Atlantic, and a family has its roots there. There the Welsh poet Gillian Clarke writes in what was the byre, looking across a landscape worked and imagined by generations of farmers and poets. Six chapters explore the relationship of places and languages, culture and family, geology and myth, in a poet's imagination. At the heart of the book is a journal of the writer's year. Lyrical, wise, meticulously observant, often humorous, Clarke records the experience of living and working on the land, observing the world from a particular place, the continuity and remaking of the source.