![Behind the stunning White Cliffs of Dover, scientists unlock a mystery of algae - The Washington Post Behind the stunning White Cliffs of Dover, scientists unlock a mystery of algae - The Washington Post](http://www.washingtonpost.com/news/morning-mix/wp-content/uploads/sites/21/2015/07/GettyImages-111833601.jpg)
Behind the stunning White Cliffs of Dover, scientists unlock a mystery of algae - The Washington Post
![If you put chalk under a powerful microscope—white cliffs of Dover type chalk, not the modern blackboard variety—you will see something like this Because it's not just a rock. It's an accumulation If you put chalk under a powerful microscope—white cliffs of Dover type chalk, not the modern blackboard variety—you will see something like this Because it's not just a rock. It's an accumulation](https://preview.redd.it/hqcplrau7jc11.jpg?auto=webp&s=c8869075e246385d04c0e32ac122b12997ac4bc2)
If you put chalk under a powerful microscope—white cliffs of Dover type chalk, not the modern blackboard variety—you will see something like this Because it's not just a rock. It's an accumulation
![White Cliffs of Dover: Thousands of tons of chalk crash into the sea as large section collapses | Daily Mail Online White Cliffs of Dover: Thousands of tons of chalk crash into the sea as large section collapses | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2012/03/14/article-2114912-122B6AF7000005DC-519_964x644.jpg)
White Cliffs of Dover: Thousands of tons of chalk crash into the sea as large section collapses | Daily Mail Online
![White Cliffs of Dover - completely made of chalk and black flint and reaches 350ft tall : r/Damnthatsinteresting White Cliffs of Dover - completely made of chalk and black flint and reaches 350ft tall : r/Damnthatsinteresting](https://i.redd.it/6lpv8qyjgmq21.jpg)