Mazghuna (also known as Al Mazghunah or Al-Muzghumah), 5 km to the south of Dahshur, is the site of several mudbrick pyramids dating from the 12th Dynasty. The area was explored by in 1910, and was excavated by Flinders Petrie in 1911. Amenemhat IV and Sobekneferu have been suggested as the owners of two unfinished pyramids at Mazghuna, but there is no conclusive evidence of this. The southern pyramid is about 3 miles from Sneferu's Bent pyramid. The base was 52.5 meters square but it was never finished. The outer burial chamber contains an inner monolithic burial vault made out of quartzite like the one for Amenemhat III at Hawara. There was a large granite plug ready to slide over the top however it was never used since no one was ever buried there.