.................... thats Hard...!!!?
North Cascades National Park is very rocky and features mountains and sneak peeks of the North Cascades Range. The mountain peaks have formed due to erosion from water and glacial ice.
Answer:
One way that glaciers change the landscape is by erosion. As they pass over the ground, the ice scrapes up soil and rock. A valley glacier will leave a valley much deeper, as it erodes the underlying surface with plucking and abrasion.