Ancient Egyptian Pyramids - Middle Kingdom

During the Middle Kingdom, Pharaohs again built themselves pyramids, but being largely of mud-brick, hey have not survived well, and ancient tomb robbers stole the burial goods. These pyramids do not match the elaborate and massive structures of the Old Kingdom Pyramids
There are four Middle Kingdom pyramids all located in the Fayum Oasis, south of Cairo.

The Pyramids at el-Lisht

Lisht Pyramids There are two pyramids at this site near Fayum:
1- Amenemhet I in the north - this mud brick pyramid is in a much ruined state but still clearly seen against the desert background
2- Senusret I, in the south - this pyramid is the best preserved from the 12th Dynasty and has nine small royal pyramids around it's periphery.

The Pyramid of Senusret II

Senusret II Pyramid
This pyramid was built by Senusret II at Kahun
It was constructed from mud brick
Parts of the black granite pyramidion that set atop the pyramid have been found
A cobble filled drainage ditch around the pyramid was filled with sand to channel rain water
It has eight rock cut mastabas on the north side of the pyramid.

The Pyramid of Amenemhet III

Amenehmet III Pyramid This 12th dynasty pyramid was built by Amenemhet III at Hawara in Fayum, not far from Senusret II pyramid. Thirteen centuries after its construction, it was visited by the Greek traveler and historian Herodotus, who described it as a labyrinth, this was one of the great wonders of the ancient world. Excavated by the British archaeologist Petrie in the years 1888-1910, the site unfortunately revealed almost nothing of the wonderful building that once must have been there.
There were life-size portraits of people of the community living there, which were kept in the houses and then placed as funerary masks on the mummy of the deceased. The pyramid has a mud brick core and a casing of fine white limestone. The entrance into the substructure was placed directly in the casing, on the south side of the pyramid, The central burial chamber of the pyramid, carved from a single block of granite, is estimated to have weighed 110 tons, and had a sarcophagus made of quartzite.