The mountains of north Wales inspired Piper from the early 1940's to the mid-1950's, during which time he rented two cottages in Snowdonia. Using these as a base, he travelled around this landscape capturing the shapes, semi-abstract forms, textures and rich colours of the mountains. A collection of works by Piper was purchased by Amgueddfa Cymru – National Museum Wales in 2014 from a private individual with links to Wales, thanks to the generous support of the Heritage Lottery Fund, the Derek Williams Trust and the Art Fund.