Place: Manhay, Wallonia, Belgium
Date: 2009-07-14 @ 23:00 approx.
Description: These lighting dark clouds were visible with the whole sky filled with them. They are formed by aerosols in the stratosphere, where they reflect the sunlight when the sun has already set. In the lower left corner of this picture you can see that there are movements of aerosols, even at that height, and they have formed small bands. The horizontal band is a contrail of a plane. It is dark, which indicates that the sun has set.
Author: Maricke van Leeuwen, The Netherlands
Equipment used: HP Photosmart M525
Original resolution: 2800x2128
