Another example of a superior mirage in which layers of cold air are trapped underneath layers of warmer air, causing light to refract on its way to the observer.

[Still taken from Les mirages, Histoires de chimères et de la fée Morgane, a documentary film by Michael ENGLER, broadcast by Arte on April 18, 1998. Copies of this remarkable film can be purchased at : http://www.zdf-enterprises.de.]