Shadow, Glory and Fogbow
© Copyright by the observers
If you have a strong light source (in this case the sun) in your back,
and you are looking into clouds or fog then you can see your shadow
surrounded by a glory. This phenomenon is also called the "Specter of the Brocken".
Everybody can see the shadow of himself and people nearby - but only one glory around his own head - the antisolar point.
The glory is formed due to the favored back-scattering of light by the small waterdrops. The radius of the glory is dependent on the size of the drops - the smaller the drops, the bigger the glory.
If the mist has a distance of more than about 50 m you also can see the more extended
fogbow. It is similar to a rainbow, but without any colour.
Excellent pictures and the physical background can be found in:
M.G.J. Minnaert: "Light and Color in the Outdoors", Springer-Verlag