The barrier runs partly along or near the 1949 Jordanian–Israeli armistice line ("Green Line") and partly through the Israeli-occupied West Bank diverging eastward from the armistice line by up to 20 kilometers to include on the western side several of the areas with concentrations of highly populated Israeli settlements, such as East Jerusalem, the Ariel Bloc (Ariel, Karnei Shomron, Kedumim, Immanuel etc.),