This image released by the Diputacion Floral de Bizkaia on Friday May 27, 2016, shows a cave drawing. Spanish archaeologists say they have discovered an exceptional set of Paleolithic-era cave drawings that could rank among the best in a country that already boasts some of the world's most important cave art. Chief site archaeologist Diego Garate said Friday that an estimated 70 drawings were found on ledges 300 meters (1,000 feet) underground in the Atxurra cave, Berriatua, in the northern Basque region. He described the site as being in "the Champions' League" of cave art, among the top 10 sites...