 The official name of the mountain is Redoubt Volcano , a translation of the Russian name " Sopka Redutskaya " , referring to , as does the word " redoubt " , " a fortified place " . A local name , " Ujakushatsch " , also means " fortified place " , but it is difficult to determine if one name is derived from the other . The Board on Geographic Names decided on the name " Redoubt Volcano " in 1891 . 
