A hanging valley is a cliff formed at the intersection between a side glacial valley and a deeper glacial trough. If a stream flows in the higher valley, a waterfall forms where the stream drops over the hanging valley into the deeper trough. Taughanook Falls near Ithaca, NY formed this way. The picture below shows a hanging valley at the end of Main Street in Telluride, Colorado. Glacial lakes in mountain valleys form from erosional irregularities in the valley floor.
Water ponding in a depression forms a lake.
The picture below shows a cloudy, snowy July day on Red Creek Pass in Montana. There are paternoster lakes in near the top of the mountain here. Depositional Landforms Glacial deposits include till, which forms from deposition directly from melting ice, and stratified drift, which forms if sediments are transported and deposited by glacial meltwater streams. Till is poorly sorted and generally unstratified due to deposition directly from melting ice. Stratified drift is better sorted, and, as the name implies, stratified internally due to deposition in water.