The symbol on the Moai's forehead is a clue to its function: Dying near it while equipped with the Ankh will cause the Spelunker to resurrect inside a small hollow within the statue, which contains the Hedjet and a door to the next level. This is best done by pressing ESC + F1, as it allows the Spelunker to retain any item he was carrying before his death. It is a bad idea to plant a bomb on the side of the statue to kill yourself; as the blast may kill you twice, both before and after you resurrect. Be warned that you must wait for the the Hedjet to fall through the thin ice and collect it before exiting through the door, as there is no second chance to collect this item.