The document discusses how frost wedging breaks rocks and forms potholes. Water freezes and expands in cracks and crevices in rocks, breaking off pieces of rock. Over time, this process creates large potholes as the frozen water repeatedly expands in the same areas of rock.

1. Frost wedgingBy ozellejohnson

2. This is like a glass bottle. It was liquid then it was in a small space and the rock broke off. Because the water was frozen and it got bigger.

3. This is a really big pothole it got hungry