Chalk hills are natural landforms made primarily of chalk, a soft, white limestone composed of calcium carbonate. These hills often feature steep slopes and rolling landscapes, resulting from the erosion of chalk deposits over time. They are commonly found in regions like southern England, where the White Cliffs of Dover are a famous example. The unique geology of chalk hills supports diverse ecosystems, including grasslands and wildflower meadows. These areas are important for wildlife, providing habitats for various species, such as butterflies and birds. Additionally, chalk hills are popular for outdoor activities like hiking and cycling, attracting nature enthusiasts and tourists alike.