Took them long enough - too many years of wondering what is still hidden within the Great Pyramid

Since when have these characters opened a tomb etc for the first time, live in front of the world. If they have a robot that can peek under the door, they will have given it a test run. They already know what is behind the door. For all we know, they have opened the door, and swapped what was there with something shiny to please the tv viewers.