It looks like that it is an uncompleted hieroglyphs text. Because after studying hieroglyphs I have came across many unfinished text. I would guess and this is a guess that the king past or died before the completion of the tomb of that pharaoh. So the "NEW"
Pharoah,King,God or Godess halted the completion. to start on there Tomb.

This was very common in that biblical era. Not saying that they didn’t see "UFOs" or "USOs". We as people in this day and age give no credit to the people in that time era for Knowledge. I am sometimes guilty.