The Saqqara complex does include some First Dynasty tombs. In that period, pyramids had not yet been attempted, and royalty were buried in what is known as mastabas. These were flat structures, with elaborate rooms to hold the sarcophagus, food stores, furniture and religious objects to help the King or other top official in the Afterlife.
The best known of these is a tomb discovered in the early twentieth century that Egyptologists thought belonged to Hor-Aha, although it is now believed it was actually the tomb of a highly placed member of his Royal Court. Hor-Aha’s actual tomb and sarcophagus was discovered in Upper Egypt.