There are renewed safety warnings after a woman was photographed sitting near a cliff edge in Sussex, just above a massive crack in the chalk.
There's already been a series of cliff falls at Seaford Head over the last year, and experts say another could happen at any time.
But despite extra warning signs and fences, people are still risking their lives, as Malcolm Shaw now reports.
There's a warning about unstable cliffs after 50,000 tonnes of chalk crashed onto the beach and into the sea at Seaford Head in Sussex yesterday.
The emergency services launched a large scale operation, but luckily nobody had been trapped underneath.
There are still huge cracks in the cliff face, as Malcolm Shaw reports.