Tomb of Hor-Den in Umm el-Qa'ab at Abydos

Pharaoh Den, also known as Hor-Den, Dewen and Udimu was the King of the First Dynasty.. Petrie`s Tomb T.

See:

1. William Matthew Flinders Petrie, Francis Llewellyn Griffith: The royal tombs of the First Dynasty. Part 1. ( Memoir of the Egypt Exploration Fund. Bd. 18, ISSN 0307-5109). Offices of The Egypt Exploration Fund, London 1900