"How Green Was My Valley" is a 1939 novel by Richard Llewellyn that tells the story of the Morgan family, a mining family living in a South Wales mining village, through the eyes of the youngest son, Huw Morgan. The novel captures the life, struggles, and changing fortunes of the family and their community during the late 19th and early 20th centuries. Huw, who has academic abilities unlike his miner family members, experiences a personal journey filled with love, loss, hardship, and familial bonds as the once-green valley becomes degraded by coal mining. The story reflects on themes of industrialization, family, love, labor struggles, and the impact of economic decline on rural communities. The book is notable for its vivid portrayal of Welsh mining life, the social and cultural tensions between Welsh and English identities, and the environmental changes caused by mining. It is a coming-of-age tale and a poignant reflection on community and loss, narrated by an older Huw looking back on a fading world. The novel won the National Book Award in the U.S. in 1940 and remains an important work capturing a vanished way of life in Wales.