Tomb or Cenotaph

A feature of Old Kingdom Egyptian culture was to build a tomb and a cenotaph (literally empty grave commemorating the dead) in both the north and the south of Egypt. Its debated which was the actual tomb and which the cenotaph. It your fantasy rpg game throw a cenotaph at tye players who are looking for a tomb could even have a prophesy concerning the openning of the tomb but no one believes the prophesy because the cenotaph was mistaken for the tomb and thus the prophesy didnt come true when the cenotaph was openned.