During the laboratory experiment by the same of the second construction, the designation of the Red Pyramid (Sneferu second pyramid) was identified.  In the author's opinion, with the help of the Sneferu’s Red Pyramid the Egyptians resorted to create the temperature distribution promoting a sand whirlwind. In particular, the hot center (Red Pyramid) and cold environment. See details in the book “Personal Tornado for Pharaoh’s Soul” (the second and third editions).

 The figure shows the drawings of sandy whirlwind movement.