structural:expansion
Den, also known as Hor-Den, Dewen, and Udimu, was the Horus name of a pharaoh of the Early Dynastic Period who ruled during the First Dynasty of Egypt. He is the best archaeologically-attested ruler of this period, credited with bringing prosperity to his realm. Den was the first to use the title "King of Upper and Lower Egypt" and the first depicted as wearing the double crown. Notably, the floor of his tomb at Umm El Qa'ab, near Abydos, was constructed using red and black granite, making it the earliest known use of this hard stone as a building material in Egypt with a flight of stairs leading to it. During his long reign, he established many of the customs of court ritual and royalty drawn on by later rulers and was held in high regard by his immediate successors.