Team were called out at 1634 to find and assist 3 males stuck on the back of a corrie whilst trying to descend Ben Cruachan. Casualties were contacted and located by the light of their mobile phone as darkness fell. Team members climbed up to casualties and assisted Rescue 177 helicopter winch them off the hill. Casualties were warmed up in the team vehicles before they were discharged to return home shaken but without injury. Team stood down at 2108.