People visit the Naryn-Kala fortress in the Caspian Sea coastal city of Derbent, in Dagestan, Russia, May 15, 2010. A gunman opened fire on a group of tourists visiting the historic fortress in Dagestan in southern Russia on the evening of December 29, 2015, killing one and injuring eleven, an official in the region's health ministry said on December 30. Picture taken May 15, 2010. REUTERS/Sergei Rasulov/NewsTeam