02/11/2026
💡 Did you know people in Britain were mining chalk for their fields nearly 2,000 years ago?
Around 70 AD, the Roman writer Pliny the Elder described how ancient Britons dug chalk to improve their farmland. The practice continued for centuries, with old Norman land agreements often requiring farmers to spread chalk on their fields. In 1225, a law under Henry III also gave people the right to dig pits on their own land to extract it.
In parts of Kent, people went deep underground to reach the chalk, creating mines with narrow shafts and hidden chambers known as deneholes!
Today, old chalk pits and quarries shape the Kent Downs landscape. Their exposed chalk and sunny slopes provide habitats for wildlife, including chalkhill blue and Adonis blue butterflies. Early spider orchids also grow in parts of the area.
Through Hidden Hollows, we’re uncovering the stories behind these places and recording their geology, heritage and wildlife to better understand their value and how we can protect them for the future.
Find out more about Hidden Hollows: https://kentdowns.org.uk/our-projects/hidden-hollows-project/