Lassen Peak __
"Lassen Peak (also known as Mount Lassen) is the southernmost active volcano
in the Cascade Range. It is part of the Cascade Volcanic Arc which is an arc
that stretches from northern California to southwestern British Columbia."
You will find an encyclopedic article along with links to related materials.
- illustrated - From wikipedia -
California Volcanic Summit Plug Lava Dacite Series __ "Lassen
Peak, in Shasta County, California USA, is the largest plug dome volcano in
the world and is the southernmost volcano in the Cascade Range."
General overview of Mount Lassen. - From economicexpert.com -