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This article investigates a speculative hypothesis that the chambers in Dynasty 4 pyramids contain solar transit data in their vertical designs. When the sun’s motion through the year is isolated to its transit across the southern meridian (in the Northern Hemisphere), it rises up in the southern skies as the sun waxes, then sinks down as it wanes, with the solstices marking the nadir and zenith for the sun. This article investigates two chambers in the Great Pyramid (the so-called King’s and Queen’s chambers), as well as a shaft in the Bent Pyramid (the so-called chimney), to see whether they mapped sections of the southern skies in their vertical designs.