Volunteers with the Israeli Antique Authority work at the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. A team of volunteers and archaeologists are searching for remains of The Dead Sea Scrolls, one of the oldest known Hebrew texts, in a national bid, initiated by the Israel Antiquities Authority (IAA), to prevent the robbery of such important artefacts and once found to hand them over to the state for preservation. (Photo by Ronen Zvulun/Reuters)





A volunteer with the Israeli Antique Authority rests during a break at the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A volunteer with the Israeli Antique Authority holds a tooth found at the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A volunteer with the Israeli Antique Authority holds a bone found at the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





Volunteers with the Israeli Antique Authority work at the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A volunteer with the Israeli Antique Authority works at the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A volunteer with the Israeli Antique Authority works inside the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





Volunteers with the Israeli Antique Authority work inside the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A volunteer with the Israeli Antique Authority holds a securing rope as he walks down to enter the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A volunteer with the Israeli Antique Authority works in the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





An Israeli Antique Authority camp is seen near the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A hat and boots belonging to a volunteer with the Israeli Antique Authority are seen inside the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A volunteer of the Israeli Antique Authority holds a securing rope as he climbs out of the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)





A volunteer with the Israeli Antique Authority rests during a break at the Cave of the Skulls, an excavation site in the Judean Desert near the Dead Sea, Israel June 1, 2016. (Photo by Ronen Zvulun/Reuters)