Egyptian earth god. Son of Shu and Tefnut. Brother and consort of the sky god Nut. Father of Osiris, Seth, Isis, and Nephthys. Geb was generally depicted lying on his back, often wearing the crown of Lower Egypt, with the naked body of Nut arched above him. In this context, he was often shown with an erect penis pointing upward toward Nut. Sometimes, however, the air god Shu was shown standing on the body of Geb, supporting Nut and perhaps separating her from Geb. His skin was often green, indicative of his role as a god of fertility and vegetation. The goose was his sacred animal and his symbol in Egyptian hieroglyphics. Geb was also said to imprison the souls of the dead, preventing them from passing on to the afterlife. The laughter of Geb was said to cause earthquakes.