 A few volcanic centers in the vicinity of the Bella Bella and Gale Passage dike swarms , such as Helmet Peak and Kitasu Hill , which are members of the Milbanke Sound Group , may represent the westernmost of the Anahim volcanoes , but their ages are significantly different , provoking on @-@ going questions about their origin and connection to other regional volcanic activity . However , many volcanoes in that center are believed to be monogenetic , suggesting a monogenetic volcanic field may be responsible . 
