Cloud patterns in the evening sky (Monochrome)

The sky (with little accompanying 'landscape') may seem an unlikely subject for monochrome but I'm quite pleased with the tonal range of this conversion, which has retained much of the visual appeal of the original colour version.

I should add that much of the fine detail of the silhouetted leaves on the trees along the bottom of the image has been lost in compression. They're pin sharp on the full sized version.