Watch our report from Andy Ward
The coastguard has issued a safety warning after part of the cliff gave way in Happisburgh
The cliff fell away overnight following more heavy rain. Officers have urged people to take extra care - saying the area was very unstable and that mud washing onto the beach can act like sinking sand.
That section of the cliff has been eroding since last year, with the first significant fall taking place in November.
This was the scale of the erosion in November:
Last January a major landslide at Trimingham near Mundesley saw caravans teetering on the edge.