How do glaciers shape the landscape?

There's a boulder the size of a delivery van sitting in the middle of a flat field near my home — no cliff above it, no rocky slope nearby. It's not a mistake. It's a record, left behind by something enormous that passed through this valley long ago. The landscape keeps its history in plain sight. You just have to learn the handwriting. In this video, we explore how glaciers shape the land around us — starting with the telltale difference between a river-carved V-shaped valley and a glacier-carved U-shaped valley, and the clues written into the very rocks beneath our feet. #glaciers #geology #landscape #glacialgeology #Downstream #earthscience #naturalhistory Chapters: 00:00 The Boulder in the Field 00:34 The V-Shaped Valley 01:04 The U-Shaped Valley 02:20 Cirques, Arêtes, and Horns 03:28 Erratics: The Ice's Freight 04:33 Mapping the Ice 05:11 The Depths of Fjords 06:18 The Great Lakes 07:54 Reading the Ice Signatures 08:51 The Water Remembers