Earth has experienced significant changes in its climate over the past ~2.6 million years (the Quaternary) with a series of glacial and interglacial cycles that have transformed our landscapes. This involves erosive action directly from glaciers moving across the area, as well as fluvial erosion from subsequent meltwater. In particular, mountain glaciers can erode the local landscape, changing the topography over which water runs downstream, but it is uncertain how quickly such activity has an impact.
