'Lowlands' in the Bible

About forty thousand armed for war went over before the Lord to the fight, to the lowlands of Jericho.

So the children of Israel put up their tents in Gilgal; and they kept the Passover on the fourteenth day of the month, in the evening, in the lowlands of Jericho.

Now on hearing the news of these things, all the kings on the west side of Jordan, in the hill-country and the lowlands and by the Great Sea in front of Lebanon, the Hittites and the Amorites, the Canaanites, the Perizzites, the Hivites, and the Jebusites,

These are the heritages of which Moses made distribution in the lowlands of Moab, on the other side of Jordan in Jericho, to the east.