Taken just after the sun had set over the Alpine mountains, this optical phenomenon was a fleeting lovely vision that lasted for a few minutes only. It is caused by the sun below the horizon casting a shadow onto the clouds. Paul McCoubrie
Taken just after the sun had set over the Alpine mountains, this optical phenomenon was a fleeting lovely vision that lasted for a few minutes only. It is caused by the sun below the horizon casting a shadow onto the clouds. Paul McCoubrie
