The longitudinal axes of the Middle Kingdom tombs excavated in the necropolis of Qubbet el-Hawa were precisely oriented to the summer and winter solstices. Located on the western side of the Nile, opposite Elephantine Island, the architectural design of these tombs differed greatly from that of the Old Kingdom with elongated spaces around these axes in relation to the solar cycle. As architecture, was excavated from the landscape itself, the presence of the sun was decisive in letting light in through the single doorway, which acted as a transitional threshold to project the sunlight indoors

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(Acknowledgements to Waggy)