where does the cascade range start and end
Cascade Range The Cascades extend northward from Lassen Peak (also known as Mount Lassen) in northern California to the confluence of the Nicola and Thompson rivers in British Columbia. The Fraser River separates the Cascades from the Coast Mountains in Canada [2], as does the Willamette Valley from the upper portion of the Oregon Coast Range. The highest volcanoes of the Cascades, known as the High Cascades,[3] dominate their surroundings, often standing twice the height of the nearby mountains. They often have a visual height (height above nearby crestlines) of one mile or more. The highest peaks, such as the 14,411-foot (4,392 m) Mount Rainier, dominate their surroundings for 50 to 100 miles (80 to 161 km).
Mount Shasta Mount Shasta (Karuk: Úytaahkoo or "White Mountain")[5][6] is a potentially active[7] volcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation of 14,179 feet (4321.8 m), it is the second-highest peak in the Cascades and the fifth-highest in the state. Mount Shasta has an estimated volume of 85 cubic miles (350 km3), which makes it the most voluminous stratovolcano in the Cascade Volcanic Arc.[8][9] The mountain and surrounding area are part of the Shasta–Trinity National Forest.