Mount Baker on the left, Twin Sisters on the right, dark ridge in foreground is Suumas Mountain and foreground is farmland north of Lynden on Sumas stade glacial outwash.
Mount Baker is a volcano. The Twins Sisters is a block of dunite (mantle). Sumas Mountain is a melange of all sorts of rocks with the added delight of massive deep-seated landslides including the asbestos containing Swift Creek slide. Great geology and great views.