How is a crag and tail formed?

A crag and tail is formed through glacial erosion and deposition. As a glacier moves across the landscape, it erodes the harder rock, creating a steep crag or cliff face. The glacier then deposits sediment in the area behind the crag, forming a gentler, elongated tail. This feature typically occurs where a resistant rock type is situated in front of a less resistant one, allowing the glacier to shape the land in this distinctive manner.