Jeremiah 51:44

Yahweh would humiliate Bel (lit. lord; cf. Jeremiah 50:2), the representative god of Babylon. The nation, personified as Bel, would regurgitate or give back what it had taken from other nations (cf. Jeremiah 51:34). Nations would no longer seek Babylon out because it would become weak and vulnerable to attack. Even her walls, which enclosed an area of 200 miles, would fall down. [Note: See Herodotus, 1:178-81.]

"The city wall proper was of double construction. The outer component was 12 feet thick, so that is [sic] was wide enough to allow several chariots to drive abreast along the walls. Towers were set into the walls at intervals of about 60 feet. Outside the walls lay a ditch lined with bricks and bitumen and kept filled with water from the Euphrates." [Note: Thompson, p. 765.]