The Westbury White Horse carved on the hillside near Westbury in Wiltshire, England. Photo credit: tipwarm/Shutterstock.com
A large portion of Southern England is made up of chalk. This white limestone are the shells of tiny marine organisms that lived and died in the seas that once covered much of Britain some 90 million years ago. As time progressed, layers of calcium carbonate built up and got compacted into a solid layer of rock. Later, tectonic movements lifted the sea floor out of the sea and these became the magnificent downland in south of England.
Much of this chalk is hidden by a thin layer of soil and vegetation, except on the edges where the chalk is exposed to the sea, leading to such dramatic headlands as … Read the rest