The Sun shines over the El Dorado Dunefield (a small dunefield located near Husband Hill - Gusev Crater - Mars) but it is not a real Sun. It is just a "light effect", added on an authentic NASA's - Mars Exploration Rover (MER) Spirit picture. A small gift from our Team to a Robotic Rover which, we believe, deeply contributed to the Human Understanding of things that, however, lie way beyond our capacity to understand...