<P> The Cascade Volcanoes ( also known as the Cascade Volcanic Arc or the Cascade Arc ) are a number of volcanoes in a volcanic arc in western North America , extending from southwestern British Columbia through Washington and Oregon to Northern California , a distance of well over 700 miles ( 1,100 km ) . The arc has formed due to subduction along the Cascadia subduction zone . Although taking its name from the Cascade Range , this term is a geologic grouping rather than a geographic one , and the Cascade Volcanoes extend north into the Coast Mountains , past the Fraser River which is the northward limit of the Cascade Range proper . </P>
<P> The Cascade Volcanoes ( also known as the Cascade Volcanic Arc or the Cascade Arc ) are a number of volcanoes in a volcanic arc in western North America , extending from southwestern British Columbia through Washington and Oregon to Northern California , a distance of well over 700 miles ( 1,100 km ) . The arc has formed due to subduction along the Cascadia subduction zone . Although taking its name from the Cascade Range , this term is a geologic grouping rather than a geographic one , and the Cascade Volcanoes extend north into the Coast Mountains , past the Fraser River which is the northward limit of the Cascade Range proper . </P>
volcano furthest north in the chain of volcanoes
volcano furthest north in the chain of volcanoes
Cascade
Cascade