Khirbat al-Tannur (Arabic: خربة التنور‎), also known as Allar al-Sifla ("Lower Allar"),[3] was a Palestinian Arab hamlet in the Jerusalem Subdistrict, near Allar. It was depopulated during the 1948 Arab–Israeli War on October 21, 1948 under Operation Ha-Har. It was located 18.5 km west of Jerusalem.