The shaft is 62 meters long and hot as hell when you get to the bottom. That speck of light is daylight way up in the distance.
It's tiring work climbing in and out of these things!! you have to crouch right down to come down into the pyramids, and then walk on your hands and feet, crouched down to get out. The air wasn't very plentiful inside this one. Usually air is piped down, like at the main pyramids in Giza.
This is Vicki inside one of the rooms before you get to the main burial chamber. The light wasn't very good for taking pictures here.