The erect penis was also a symbol or sign of health and fertility (the ability to give life). The Hohle Fels phallus was found in a cave in Germany. It is a piece of stone carved to look like a penis that archaeologists believe is about 28,000 years old. (Archaeologists are scientists who study the past by looking for things that people have left behind.) From the fourth millennium B.C. (4000–3001 B.C.), Ancient Egyptians worshipped Min as the god of reproduction and the maker of all things. Min was shown in statues and on wall carvings as having an erect penis.