The Israeli West Bank barrier is a security and separation barrier (see "Names of the barrier") under construction by the State of Israel along and within the West Bank. Upon completion, the barrier's total length will be approximately 700 kilometres (430 mi). 90% of the length of this barrier is a fence with vehicle-barrier trenches surrounded by an on-average 60 metres (200 ft) wide exclusion area, and 10% of the barrier is an 8 metres (26 ft)-tall concrete wall.[2] As of 2012, 439.7 km (273.2 mi) of barrier (62.1%) have been built, 56.6 km (35.2 mi) (8%) are under construction and 211.7 km (131.5 mi) (29.9%) are projected but construction hasn't begun.[3] The barrier is built mainly in the West Bank and partly along the 1949 Armistice line, or "Green Line" between Israel and Palestinian West Bank.[4] According to the Israeli human rights organization B'Tselem, 8.5% of the West Bank area is on the Israeli side of the barrier, and 3.4% is on the other side but "partly or completely surrounded".[5]