South Jordan Valley
Based on the Wikipedia Article: The South Jordan Valley is a long and narrow trough, 105 km (65 mi) long if measured “as the crow flies”, with a width averaging 10 km (6.2 mi) with some points narrowing to 4 km (2.5 mi) over most of the course, before widening out to a 20 km (12 mi) delta when reaching the Dead Sea. Over most of its length, the Jordan Valley forms the border between Jordan to the East, and Israel and the Israeli-occupied West Bank, to the West. ...