• volcanoes of the Milbanke Sound Group in British Columbia, Canada, remain mysterious because little is known about them and their origins are not well defined?

Facts on topics related to Milbanke Sound Group

Mount St. Helens

• Washington State Route 504 was damaged when Mount St. Helens erupted in 1980 and had to be rebuilt on higher ground?
• although the summit of underwater volcano Loihi is 969 metres (3,180 ft) below sea level, it is still twice as tall, measured from the base of its southern flank, as Mount St. Helens ever was?
• the volcano Mount St. Helens is named after Alleyne FitzHerbert of Derby (pictured)?