The King’s Chamber in the Great Pyramid was not meant to be visited:
Getting to it is challenging, and once you enter, it is very difficult to turn back. The stone passage is only wide enough for one person. You must be in good physical condition, able to climb several flights of stairs, bend double, crouch and duck-walk for short distances. The King’s Chamber itself is the world’s most claustrophobic place, with dim light and heavy, hot, oxygen-poor air. There is no ventilation. If you are at all sensitive to claustrophobia or confinement, or if you have any sort of respiratory condition, for your own safety and the safety of others, you must not enter the pyramid because it is impossible to remove a person or to bring aid to them quickly .

The Queen for whom the sun shines: Private Tour of Queen Neferatri’s Tomb
We rise very early in the morning to be able to secure entry to the recently restored tomb of her Majesty Queen Nefertari, wife of the mighty Pharaoh Ramses the Great, limited to the first 100 visitors.Long before Cleopatra humbled the ruler of Rome, an Egyptian queen held power over the heart and soul of Ramses, Egypt’s greatest pharaoh. In the 12th century BC, a brokenhearted Ramses built a grand funerary tomb for Queen Nefertari, “the Beautiful one,” in the Valley of the Queens. It’s been exquisitely restored with the aid of an American endowment, and is among the rarest sights in all Egypt: the only great tomb ever built by a pharaoh for his late queen. Artistically, it is the closest thing you could ever come to see the original Ancient Egyptian art in all of its glory and finesse.Because of its fragile nature, only a limited number of visitors are allowed entry each day. We are the only company to include a visit to Nefertari’s tomb in our daily program. Because of the limited access we must rise early for our visit, appropriate as Ramses named Nefertari “the one for whom the sun shines.”