I spent my holiday in Italy where I also visited Monti Sibillini National Park. I read from the web that June is a good time to visit as there are lots of flowers, nights are cold and days are warm. This means that mountain valleys are covered with fog and at sunrise you can get good light. I did not expect more than that!
On the first evening there I drove with a car through the valleys, and I made a map about places where I could go the next morning. In the morning there was a very thick layer of fog, and after sunrise it started to lift. I was taking pictures from a little village on one of the mountaintops when suddenly I noticed a huge fogbow had appeared. It lasted about 10 minutes and then the fog bow disappeared. Two stitched images were used because the 24mm lens was too narrow. – Olar Barndõk
Equipment and settings: Canon EOS 5D Mark II, Canon TS-E 24mm f/3.5L II tilt-shift lens – 1/200th at f/11, ISO 100.