The avalanche occurred Wednesday on a remote mountain slope about 4 miles from the village of Mugur-Aksy.
Regional officials have declared a week of mourning for the boys, who were climbing the slope to plant flags, a local custom believed to bring good luck, RIA Novosti said.
Only one of the seven teens on the quest survived.
Workers accuse National Zoo of animal mismanagement
Wisconsin business offering 'therapeutic cuddling' forced to close