The pyramid was originally about 75 metres tall with a base 105 metres long and an incline of 57°. Typical for pyramids of the Middle Kingdom, the Black Pyramid, although encased in limestone, is made of mud brick and clay instead of stone. The ground-level structures consist of the entrance opening into the courtyard and mortuary temple, surrounded by walls. There are two sets of walls; between them, there are ten shaft tombs, which are a type of burial structure formed from graves built into natural rock.