Nachal Telem (Hebrew: נחל תלם) is a wadi located in the West Bank begins in the western part of the Judaean Mountains and goes westwards. The official Israeli name of the wadi is "Nachal Natziv" (נחל נציב) but this name is not used in practice. The wadi contains the El Kof Nature Reserve (שמורת יער אל קוף) and the Tor-Safa Cave (מערת טור-צפא) which is the largest of the caves in the western slopes of the Judea mountain. On December 28, 2007 a terrorist attack was carried out in Nahal Telem in which two Jewish tourists were killed.