The Cave of Letters is a cave located in the Dead Sea area that contained one of the largest caches of ancient documents and personal correspondence ever discovered in the land of Israel. Discovered in 1960 by Israeli archaeologist Yigael Yadin, the cave contained letters from Bar Kochba, leader of the Third Jewish Revolt, as well as other documents from that period. Since its discovery, the letters found there have slowly been published, but not yet in their entirety.