The Cascade Volcanic Range is a result of subduction off the coast of Oregon and Washington and is composed of (among others) Mt. Rainer, Mt. Hood, Mt. St. Helens, Mt. Shasta, Mt. Jefferson, Crater Lake, and the Three Sisters. This is a broad overview of the area with a vertical exaggeration of 4.

High Elevation: 4392m (Mt. Rainier)
Low Elevation: -200m (off the coast of Oregon)
Area: 157,586 km2

This model was generated using a program that is currently being developed. It is based on the GMRT dataset (http://www.marine-geo.org/portals/gmrt/) and utilized the interface from GeoMapApp (http://www.geomapapp.org)