The Seven Hills Of Rome : A Geological Tour Of The Eternal City

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From humble beginnings, Rome became perhaps the greatest intercontinental power in the world. Why did this historic city become so much more influential than its neighbor, nearby Latium, which was peopled by more or less the same stock? Over the years, historians, political analysts, and sociologists have discussed this question ad infinitum, without considering one underlying factor that led to the rise of Rome–the geology now hidden by the modern city. This book demonstrates the important link between the history of Rome and its geologic setting in a lively, fact-filled narrative sure to interest geology and history buffs and travelers alike.

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The Seven Hills of Rome Copyright © 2005 by Princeton University Press Published by Princeton University Press, 41 William Street, Princeton, New Jersey 08540 In the United Kingdom: Princeton University Press, 3 Market Place, Woodstock, Oxfordshire OX20 1SY All Rights Reserved Third printing, and first paperback printing, 2007 Paperback ISBN-13: 978-0-691-13038-5 Paperback ISBN-10: 0-691-13038-8 The Library of Congress has cataloged the cloth edition of this book as follows Heiken, Grant. The seven hills of Rome : A geological tour of the Eternal City / Grant Heiken, Renato Funiciello, and Donatella De Rita. p. cm. ISBN 0-691-06995-6 (alk. paper) 1. Rome (Italy)—Guidebooks. 2. Geology—Italy—Rome—Guidebooks. I. Funiciello, R. II. De Rita, Donatella. III. Title. DG804.H445 2005 913.7′602—dc22 2004016569 British Library Cataloging-in-Publication Data is available This book has been composed in Minion Text Printed on acid-free paper. ∞ press.princeton.edu Printed in the United States of America 10 9 8 7 6 5 4 3 Contents Foreword, by Walter Veltroni vii Preface ix CHAPTER 1 A Tourist’s Introduction to the Geology of Rome 1 Timelines 18 CHAPTER 2 Center of the Western World—The Capitoline (Campidoglio) Hill 27 CHAPTER 3 Palaces and Gardens—The Palatine (Palatino) Hill 37 CHAPTER 4 The Aventine (Aventino) Hill 51 CHAPTER 5 The Tiber Floodplain, Commerce, and Tragedy 59 CHAPTER 6 The Tiber’s Tributaries in Rome—Clogged with Humankind’s Debris 85 CHAPTER 7 The Western Heights—Janiculum, Vatican, and Monte Mario 110 CHAPTER 8 The Celian (Celio) Hill 123 CHAPTER 9 Largest of the Seven Hills—The Esquiline (Esquilino) 153 v CONTENTS CHAPTER 10 Upper Class—The Viminal (Viminale) and Quirinal (Quirinale) Hills 162 CHAPTER 11 Field Trips in and around Rome 174 The Seven Hills of Rome in Fifteen Stops Panoramas, Piazzas, and Plateaus A Field Trip to Rome, the City of Water 174 195 216 Acknowledgments 229 Further Reading 231 Index 237 vi Foreword FROM ITS TIME as the historic center of the Roman world, Rome has been continuously a political, religious, and administrative capital. Geologic and terrain factors have assured its population growth and, above all, provided the conditions for survival of the most modern culture in the ancient world. From lessons of urban development and prosperity, the Roman people developed the capacity to recognize and to manage in a positive way the natural resources of the region. The volcanic terrain, the Tiber River and its complex watershed, the water resources of the central Apennines and surrounding countryside, and the abundant natural materials for construction, roads, and aqueducts have all contributed to the birth, growth, and success of Rome. If these natural riches were to be considered res nullius (a thing that has no owner), the city would experience progressive and ev