What glacier is Piles of rocks?

"Piles of rocks" typically refers to glacial till, which is sediment deposited by a glacier as it retreats. This material can include a mix of rocks, gravel, sand, and clay, creating mounds or piles in the landscape. These deposits are often left behind when glaciers melt and are commonly found in areas that were once covered by ice. Glacial till is a key feature in understanding past glacial movements and the geology of an area.