Answer: plastically down gradient, either down the slope of the land surface or in the direction of thicker ice to thinner ice.
Explanation: Glaciers are fallen snow that are compacted and compressed into a huge thickened ice mass.
Glaciers are formed when snow remains in a particular location for too long that it transformed into ice.
glaciers flows and due to its enormous mass, glaciers flow very slowly and possess erosive power.
The weight at the thicker end makes the ice to flow down the slope of the land gradient after little melting from the surrounding heat.