Jacob van Ruisdael – Museumslandschaft Hessen Kassel GK 398. Der Wasserfall (c. 1655-1660)
Materials: oil on canvas. Dimensions: 100 x 87 cm. Nr. GK398. Source: http://altemeister.museum-kassel.de/33830/0/0/147/s3/0/0/objekt.html. I have changed the light, contrast and colors of the original photo.