A smoke ring that formed over an industrial site floats over the small fishing village of Leirvik, near Stord, Norway.

Photo taken on June 15, 2007 at 13:20 pm. Note the veil of whitish smoke that surrounds the dark ring.

[© Kjetil ØYEHAUG/SCANPIX - image found at www.aftenposten.no (thanks to Ole Jonny BRÆNNE for drawing our attention to this photo]