Introduction to ancient glacier relics: Aden had five ice ages and glacial activities. The erosion, erosion and movement of glaciers left many ice relics, creating cirque peaks, U-shaped valleys, and blades. There are many kinds of erosion landforms such as ridges, ice-sliding surfaces, sheep's stones, hanging valleys, side problems, final problems, glacial lakes, glacial boulders, etc., which have certain scientific research value.