Visitors at the Sorek stalactites cave as it is illuminated with a new lighting system on August 9, 2012 near Beit Shemesh, Israel. The cave, 82 meters long and 60 meters wide, was discovered accidentally by workers blasting at the nearby quarry in 1968. (Photo by Uriel Sinai/Getty Images)
Visitors at the Sorek stalactites cave as it is illuminated with a new lighting system on August 9, 2012 near Beit Shemesh, Israel. The cave, 82 meters long and 60 meters wide, was discovered accidentally by workers blasting at the nearby quarry in 1968. (Photo by Uriel Sinai/Getty Images)
Sorek stalactites cave in Israel is illuminated with a new multi-color lighting system. August 9, 2012.