The remains of a 13th Dynasty pyramid was recently unearthed north of King Senefru's bent pyramid in the Dahshur royal necropolis south of Cairo. Archaeologists unearthed a corridor leading to the interior of the pyramid, as well as a hall leading to a southern ramp. In addition, an alabaster block inscribed with 10 vertical lines of hieroglyphics was discovered and is being studied further. The pyramid has a unique design, causing some to suggest it may have been an early attempt to build a smooth-sided pyramid. This discovery adds to the list of 123 ancient pyramids known in Egypt. The tentative date of 1700 BC would place its construction after the death of Joseph but before the birth of Moses, during the time the Israelites were living in Egypt according to biblical chronology.