Broomhill is part of the North Downs ridge of chalk that finishes on the Hoo Peninsular and was formed in the cretaceous period. If you are lucky you may find prehistoric fossils, especially oyster shells, washed up by the sea that used to cover the area.
Chalk was quarried at Broomhill from Roman times until the last quarry was closed in the middle of the 20th century. There were also several lime kilns on the site from the Middle Ages which were were still in use until the 19th Century.
Evidence has been found at Piper’s House Farm that the chalk pits were used as refuges by Ancient Britons when under attack.
An Anglo-Saxon grave was found on the site which contained a spearhead, knife and bronze ring set with an amethyst which can be seen in Rochester Museum.