This document summarizes key aspects of glacial environments and glacial landforms. It describes how snow accumulates over time to form glacial ice, and the different zones within glaciers. It also discusses the two main types of glaciers - mountain/alpine glaciers and continental ice sheets - and how they form and move. The document outlines various erosional landforms created by glaciers such as cirques, arêtes, and U-shaped valleys. It also describes depositional features including moraines, eskers, kames, and drumlins. In summary, the document provides an overview of glacial formation, movement, erosion processes, and resulting landforms.