Lower Egypt ( Arabic : مصر السفلى Maṣr el-sofla ) is the northernmost region of Egypt : the fertile Nile Delta , between Upper Egypt and the Mediterranean Sea - from El-Aiyat , south of modern-day Cairo , and Zawyet Dahshur .
Lower Egypt is the fertile Nile Delta region , which stretches from the area between El-Aiyat and Zawyet Dahshur , south of modern-day Cairo , and the Mediterranean Sea .