Explorer James Bruce, who visited the Ethiopian Highlands c. 1770, wrote of "a tradition among the Abyssinians, which they say they have had since time immemorial", that in the days after the Deluge, Cush, the son of Ham, traveled with his family up the Nile until they reached the Atbara plain, then still uninhabited, from where they could see the Ethiopian table-land. There they ascended and built Axum, and sometime later returned to the lowland, building Meroë. He also states that European scholars of his own day had summarily rejected this account on grounds of their established theory, that Cush must have arrived in Africa via Arabia and the Bab-el-Mandeb, a strait located between Yemen on the Arabian Peninsula, and Djibouti and Eritrea on the Horn of Africa. Further, the great obelisk of Axum was said to have been erected by Cush in order to mark his allotted territory, and his son Ityopp'is was said to have been buried there, according to the "Book of Aksum", which Bruce asserts was revered throughout Abyssinia equally with the "Kebra Nagast".