The mountains, as we now see them, were formed largely by lava and ash from the volcanoes with the subsequent valleys and canyons formed by erosion from glaciers, water and wind.
(we; see; them; T:now) (The mountains; were formed; largely by lava and ash from the volcanoes with the subsequent valleys and canyons; T:as we now see them) (the subsequent valleys and canyons; formed; by erosion from glaciers, water and wind)
we The mountains the subsequent valleys and canyons
see were formed formed
them T:now
largely by lava and ash from the volcanoes with the subsequent valleys and canyons T:as we now see them
by erosion from glaciers, water and wind