Al-Lahun ancient Egyptian site, located southwest of Al-Fayyūm Oasis.

Al-Lahun was the location of a Middle Kingdom (1938–c. 1630 BCE)

The pyramid, built by King Sesostris II (reigned 1878 BCE), Although the pyramid itself was robbed in antiquity, a treasure of jewelry was discovered in the tombs of the princesses, located within the pyramid enclosure.

In technical perfection and artistic mastery this collection easily rivals all other Middle Kingdom objects of its type.

Excavation of the village, which was also inhabited during the Second Intermediate period (c. 1630–1540 BCE), revealed a remarkable degree of town planning.

Innumerable pieces of furniture and other household items were found, as well as a mass of papyri dealing with various topics, including letters, private wills, royal hymns, medical texts, and the temple archives of the pyramid cult.

In 2009 excavations at Al-Lahun yielded a number of significant finds, including the body of a man identified by archaeologists as a senior government official.

On the basis of engravings inscribed on its wooden coffin, the body was dated to the 2nd dynasty (c. 2775–c. 2650 BCE), indicating that the site had been significant far earlier than previously thought.

The pyramid stands on an artificial terrace cut from sloping ground. On the north side eight rectangular blocks of stone were left to serve as mastabas, probably for the burial of personages associated with the royal court.

The most remarkable discovery was that of the village of the workers who both constructed the pyramid and then served the funerary cult of the king. The village, conventionally known as Kahun, is about 800 meters from the pyramid and lies in the desert a short distance from the edge of cultivation. When found, many of the buildings were extant up to roof height.