#ROLL Sde Boker - Beer-Sheva, April 9 - 10, 2001 #01 Horseshoe formation (a round tilted pit 200 - 250 m in diameter and 30 - 40 m in depth with a flat bottom surrounded by caves) of Nahal Darokh river 4 miles east from Sde Boker. The Middle East, April 9, 2001 #04 Upper side walls of the horseshoe formation of Nahal Darokh river 4 miles east from Sde Boker. The Middle East, April 9, 2001 #05 Caves in the upper side walls of the horseshoe formation of Nahal Darokh river 4 miles east from Sde Boker. The Middle East, April 9, 2001 #08 Caves along the trail on the eastern side of the horseshoe formation of Nahal Darokh river 4 miles east from Sde Boker. The Middle East, April 9, 2001 #10 Sky seen through caves in the upper side of the horseshoe formation of Nahal Darokh river 4 miles east from Sde Boker. The Middle East, April 9, 2001 #11 Horseshoe formation (a round tilted pit 200 - 250 m in diameter and 30 - 40 m in depth with a flat bottom surrounded by caves) of Nahal Darokh river 4 miles east from Sde Boker, view from lower site. The Middle East, April 9, 2001 #16 Tributary of Nahal Darokh river going through chalk hills 4 miles east from Sde Boker, view from lower site. The Middle East, April 9, 2001 #18 Chalk hills at Nahal Darokh river 4 miles east from Sde Boker. The Middle East, April 9, 2001 #20 Chalk hills at Nahal Darokh river 4 miles east from Sde Boker. The Middle East, April 9, 2001 #21 Chalk hills at Nahal Darokh river 4 miles east from Sde Boker. The Middle East, April 9, 2001 #26 Open parts of Nahal Darokh river on Zin valley 4 miles east from Sde Boker. The Middle East, April 9, 2001 #30 Open parts of Nahal Darokh river on Zin valley, with the horseshoe formation on the background, 4 miles east from Sde Boker. The Middle East, April 9, 2001 #33 A plant in a riverbed in Zin valley, 3 miles east from Sde Boker. The Middle East, April 9, 2001 #37 View of Qeren Akev Mt. behind Zin valley from Ma'ale Zin Rd., 2 miles south-east from Sde Boker. The Middle East, April 9, 2001 #38 Big thorny plants in Shekhuna Gimmel Quarter near a house populated by Russian immigrants. Beer-Sheva, the Middle East, April 10, 2001