An archaeological dig in Cambridge has uncovered surprising ancient remains and the foundations of the world's largest telescope of the late Victorian era. Archaeologists from the University of Cambridge Archaeological Unit, recently working at the site of the new Kavli Institute for Cosmology in the grounds of the University's Observatory in west Cambridge, have unearthed an extraordinary series of deposits. The Observatory hill-top has long been known as both a location of early settlement and, in Medieval times, as Gritrow , a hamlet specialising in gravel quarrying. Accordingly, the site was peppered with oblong pits characteristic of small-scale quarrying, themselves dated to the 16 to 18th centuries.