The Cave of Letters is a refuge cave in Nahal Hever in the Judean Desert where letters and fragments of papyri from the Roman Empire period were found. Some are related to the Bar Kokhba revolt, including letters of correspondence between Bar-Kokhba and his subordinates. Another notable bundle of papyri, known as the Babatha cache, comprises legal documents of Babatha, a female landowner of the same period.

The Judaean Desert or Judean Desert is a desert in the West Bank and Israel that lies east of the Judaean Mountains, so east of Jerusalem, and descends to the Dead Sea. Under the name El-Bariyah, it has been nominated to the Tentative List of World Heritage Sites in the State of Palestine, particularly for its monastic ruins.