'Lowlands' in the Bible

with all the Arabah (desert lowlands) across the Jordan to the east, even as far as the sea of the Arabah (the Dead Sea), at the foot of the slopes of Pisgah.

The king made silver as common in Jerusalem as stones, and cedars as plentiful as the sycamore trees that are in the lowland.

The king made silver in Jerusalem as common as stones, and cedar wood as plentiful as the sycamore-fig trees that are in the lowland.

He also built towers in the wilderness and dug many cisterns, for he had a great deal of livestock, both in the lowlands and in the plain. He also had farmers and vinedressers in the hill country and in the fertile fields, for he loved the soil.

Should you not hear the words which the Lord proclaimed by the former prophets, when Jerusalem was inhabited and prosperous along with her cities around her, and the South (the Negev) and the foothills were inhabited?’”