What causes cliffs to collapse?
Media playback is unsupported on your device
Video

Collapsing cliffs: What causes them to crumble?

A man was killed when a cliff collapsed in Thorpeness, Suffolk on Saturday.

Mainland UK has about 7,723 miles (12,428 km) of coastline.

It is constantly battered by the sea, but what's the science behind a cliff collapse?

  • 19 Jan 2017