http://www.smithsonianmag.com/smart-new ... E0MzQwMAS2
the Egyptian Ministry of Antiquities announced that a team of their archaeologists discovered the remains of pyramid dating back to the 13th Dynasty, which ruled about 3,700 years ago reports the Associated Press. The only problem is that an inscription indicates that the pyramid may have been built for a ruler that already has a pyramid next door.
Wiki indicates that the king in question, Ameny Qemau, ruled for only two years. One pyramid a year seems like a torrid pace.