A helicopter carrying 16 people crashed into a volcanic crater lake in Russia on Thursday, leaving eight people missing and feared dead, rescue officials said. Tourists, along with crew members, aboard the Mi-8 helicopter were on a sight-seeing trip as it went down in Kurile Lake in the mountainous Kamchatka Peninsula, which was formed in a volcano caldera and crater and is located in the Kronotsky nature reserve. Staff at the nature reserve managed to save half of the passengers as they rushed to the crash site, dispatching speedboats just minutes after the crash. Two survivors required treatment in the intensive care unit and were badly hurt as the ice-cold water of the lake was no more than 41–43 Fahrenheit (5–6 degrees Celsius). “They approached the scene in a boat and saved eight people,” Kamchatka Gov. Vladimir Solodov confirmed in a statement, according to AFP. The survivors had to swim about …