TABLE OF CONTENTS CHAPTER 1 A Sudden Collapse 5 CHAPTER 2 What Causes Sinkholes 11 CHAPTER 3 On the Lookout 17 CHAPTER 4 Life Inside 23 THAT'S AMAZING Uncovering Artifacts 28 Focus on Sinkholes 30 Glossary 31 To Learn More 32 Index 32
CHAPTER 1 A SUDDEN COLLAPSE Cars drive along a busy street Then a traffic light turns red The drivers come to a stop As they wait for the light to turn green the ground begins to move Dirt and pavement collapse A large hole opens up blocking three lanes of traffic Part of the sidewalk falls into the hole So does a car that was parked nearby Streets had to be closed after a sinkhole opened in Brooklyn New York 5
