Jacob van Ruisdael – Museo de Bellas Artes de Bilbao 92/118. A Marsh in a Forest at Dusk (c. 1660)
Materials: oil on canvas. Dimensions: 77.7 x 92.2 cm. Inscriptions: VRuisdael (bottom right hand side, with the initials intertwined). Nr.: 92/118. Source: img709.imageshack.us/img709/2685/pantanoenunbosquealanoc.jpg. P.S. I have changed the contrast of the original photo.