The Descending Passageway
Please observe the base line of the pyramid is theoretical. In reality the bedrock has only been leveled partly. In the middle remains a knoll. We can only guess the dimensions of the knoll, but we know for sure the bedrock is not leveled completely. When you see the complete construction of the pyramid and the great efforts the Egyptians made, it is out of the question the knoll was left as it was due to laziness or time pressure. There might have been a very good reason to build the pyramid exactly there - on the knoll.
The little black spot is an opening to a little westward passage, which is connected to a shaft which leads upwards to the Gallery.
Underneath you can see a picture of the little passage viewed against the western wall in the descending passageway.
Source: The Great Pyramid Passages And Chambers" Volume 1 by John and Morton Edgar, 1910
In a tent at the pyramid in Gizeh Morton Edgar wrote a letter on 16th June, 1909 to Brethren that he mentioned that he had to remove some concrete for a measuring purpose in the floor corner at the eastern wall at the end of the descending passageway. He discovered the concrete was "natural" formed by the limestone dust and caked by the rain. When he removed the concrete gently with a chisel he all of a sudden saw a living worm completely embedded in it. He wrote: "It was nearly three inches long, flat in section, hard, and of an ivory colour". Source: The Great Pyramid Passages And Chambers" Volume 1 by John and Morton Edgar, 1910. (S1-[S293]-P145-L44).
It is a surprise an animal can live in this environment.
Underneath you can see the measuring details of the descending passageway. The Apex is the center of the pyramid in the North - South direction. (The very small figures are for my use only).
There might be small measuring errors on the measured values (RM). Different sources might have different measuring values, it is not possible to measure the lengths, widths and heights with a high precision in the pyramid mainly due to the rough sides of the passageways and chambers, but also due to the temperature changes as mentioned by Sir William Matthew Flinders Petrie, who is one of my sources.
1. We know from measurements the angle of the descending passageway is 26,52°. Now, the Egyptians did not know angle in °. They defined the slope in seked, please observe all calculations will be shown clearly in another type writing:
2. The length of the descending passageway has been measured to 200,86 cubits RM, the height is 2 1/4 cubit RM and the width is 2 cubits RM.
3. Flinders Petrie stated in chapter VII section 35 in his book "The Pyramids And Temples of Gizeh" : "Having, then, fixed the original position of the doorway of the Pyramid, we may state that it was at 668-2 +/- 1 above the pavement of the Pyramid". (S5-[S35]-P26-[C1]-L48)
When Flinders Petrie wrote "668-2" he meant 668,2 British inches which is 16,97 meters or 32,4 cubits.
Compared with other sources it seems to be true.
All other lengths and angles in the above figure are calculated:
(The half of the length of the pyramid base is 220 cubits NM and the height is 280 cubits NM.)
Underneath is a view from the top of pyramid:
And a closer look:
The Entrance and the descending passageway is located 13,9 cubits East for the center line of the pyramid.