The opening ceremony of the Complex of the Sun Cult in the Temple of Hatshepsut at Deir el-Bahari will take place on Sunday noon. The event is organized by the Egyptian Ministry of State for Antiquities in cooperation with the PCMA Research Centre in Cairo and the Embassy of the Republic of Poland.
The limestone on the Causeway represents a more resistive layer within Member II. However, the fractures remained open and allowed the rain water to find its way through this layer long before the carving of the enclosure walls.
Millions of years have passed since the sediments on top of Member III were deposited and later uplifted (probably starting in Oligocene/Miocene) and exposed to weathering and erosion by wind, sand and water.
Let's look at the history of sediment deposition now. The limestone formations constituting the Sphinx and its surrounding enclosure are usually subdivided into three members (member, part of the formation), as shown in the diagram below.