As snow piled up and cooling temperatures persisted, glaciers formed and moved south east across the valleys, carving V-shaped valleys, or glacial cirques.
(snow; piled up; ) (cooling temperatures; persisted; ) (glaciers; formed; ) (glaciers; moved; south east; across the valleys; carving V-shaped valleys, or glacial cirques)
snow cooling temperatures glaciers glaciers
piled up persisted formed moved
south east across the valleys carving V-shaped valleys, or glacial cirques