 South of Egypt , Djedkare dispatched at least one expedition to the <unk> quarries located 65 km ( 40 mi ) north @-@ west of Abu <unk> . Djedkare was not the first king to do so , as these quarries were already exploited during the Fourth Dynasty and continued to be so during the Sixth Dynasty and later , in the Middle Kingdom period ( c . 2055 BCE – c . 1650 BCE ) . 
