Between 1880 and 1938, Gilbert's Pit was worked for the fine Thanet sand perfect for glassmaking and moulding. Today, the pit comprises diverse habitats. They are home to many birds and over 150 species of wild flowers. The Pit's highest point offers far-reaching views over London and the River Thames. Pottery dating from the first to the fifth century has been found on this spur, where there was once a Roman Settlement.