▼sn The rift valley plains of Jericho refer to the parts of the Jordan Valley in the vicinity of Jericho (see HALOT 880 s.v. עֲרָבָה). There the terrain is fairly level and slopes gently down to the Jordan, a descent of about 450 feet over five miles. Many translations render this as “the plains of Jericho” (ESV, NASB, NIV, KJV). See the note at Num 22:1.