Passage: As Ramesses I ruled for less than two years, his sepulchre is rather truncated, being only twenty-nine metres long. It consists of two descending staircases, linking a sloping corridor and leading to the burial chamber. Like the tomb  of Horemheb (KV57), the grave is decorated with the Book of Gates. The sarcophagus, still in place in the final chamber, is constructed of red quartzite.

Question: What is the sarcophagus made of?
red quartzite