Khirbet Qeiyafa, also known as Elah Fortress and in Hebrew as Horbat Qayafa, is the site of an ancient fortress city overlooking the Valley of Elah and dated to the first half of the 10th century BCE. The ruins of the fortress were uncovered in 2007, near the Israeli city of Beit Shemesh, 30 km (20 mi) from Jerusalem. It covers nearly 2.3 ha and is encircled by a 700-meter-long (2,300 ft) city wall constructed of field stones, some weighing up to eight tons. Excavations at site continued in subsequent years.