Many critics believe that Piper's gouaches of Snowdonia, an example of which the Tate has lacked until now, are among his best works. Their rather sombre aspect could be associated with the artist's experience of the destructiveness of the Second World War. As an official War Artist, he had recently recorded the effects of war in other works, such as the Tate's watercolour of the blitzed, 'All Saints Chapel, Bath' 1942. (N05719). Piper produced a resumé of his work in the screenprint portfolio, 'Stones and Bones' 1978 (P07363) and included a number of Welsh mountain images, indicating their importance for him.