The desert scene in the prologue was clearly shot in a quarry of some sort. Amusingly enough, thousands of years later, the same quarry represented the same desert with no change in the piles of sand. An amazing coincidence since the area had just be struck by a massive sandstorm.
As she walks through the hotel lobby, Claire is wearing red lipstick; when she is stopped by the fortuneteller at the door she has on pink lipstick; when she reaches her destination she appears to have no lipstick at all.
When Stanley Preston's press conference in front of the mummy ends, all the reporters disperse. The film then cuts to a close-up of the mummy, in which several of the reporters's head's are visible on the bottom of the screen.
At the start, Prem has just laid his master's body to rest and walks outside into the desert. There is a low evening 'sun' and his shadow is cast on the faraway mountains and sky revealing them as a backdrop only 4 or 5 feet away.