Philip James De Loutherbourg – Tate Gallery T00772. An Avalanche in the Alps (1803)
Materials: oil on canvas. Dimensions: 109.9 x 160 cm. Nr.: T00772. Source: http://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Phillip_James_De_Loutherbourg_-_An_Avalanche_in_the_Alps_-_Google_Art_Project.jpg/1280px-Phillip_James_De_Loutherbourg_-_An_Avalanche_in_the_Alps_-_Google_Art_Project.jpg. I have changed the contrast of the original photo.