Drainages carved by glaciers form steep canyons that open into the valley floor.
(Drainages; carved; by glaciers) (Drainages carved by glaciers; form; steep canyons that open into the valley floor) (steep canyons; open; into the valley floor)
Drainages Drainages carved by glaciers steep canyons
carved form open
by glaciers
steep canyons that open into the valley floor
into the valley floor