Continuity mistake: When they come over the mountain, Moses looks out at the Red Sea and sees nothing on the horizon. When they get across, they can see the mountains where they crossed very easily - the area on other side has mountains similar to the ones they crossed, which should have been visible when first approaching.
Factual error: The scene in front of the Sphinx shows the Sphinx without a nose. The nose was not missing until much later - most likely due to vandalism in AD 1378. (The story about Napoleon's soldiers shooting it off is untrue - sketches made in 1738 and published in 1757 show the nose was already missing, long before Napoleon's time).