Despite the vast amount of work written and published about London, there has never before been a full-length book covering the history of that part of the Thames Valley before the arrival of the Romans.  Beginning in the Cretaceous Era, which ended 66 million years ago, Prehistoric London examines the geology of this part of Britain and explains why this particular section of the Thames proved to be the ideal location for a city. It describes, too, the animals and people who were attracted to the area by the conditions there. From the time of the dinosaurs, through to the Iron Age and the Roman invasion in 43 AD, this is a comprehensive account of London before London. It is the story of the land, and those who dwelt there, before anybody had thought of founding a city on the banks of the Thames.  In addition to being a history book, though, Prehistoric London is also a lively guidebook which explains how to explore modern London and find such things as Iron Age hillforts and a site