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417 words used in the labs.

Find a term from the labs, understand the process behind it, and see how it appears in the landscape. Each entry connects an explanation with a real observation and a model you can explore.

Horn

A sharp pyramidal mountain peak formed by erosion from glaciers on several sides; the Matterhorn is a well-known example.

What to look for

Little Matterhorn, Glacier National Park, USA. Glacial erosion on several sides can leave a sharp pyramidal peak; this is not the Matterhorn in the Alps.

The sharp summit and steep ridges of Little Matterhorn in Glacier National Park, Montana.
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Explore further with USGS water glossary · USGS volcano glossary · NPS glacial geology · NASA Earth facts. Photograph acknowledgements are collected on the Image credits page.